# BCA: Wandanya Maiden Mineral Resource Estimate-23.6Mt @ 25.8% Mn Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4 Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03145698 Publisher: asx Original announcement: 2026-09-29T22:16:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-29T23:40:33.540Z Atlas analysis updated: 2026-09-29T23:40:33.540Z - Company: Black Canyon Limited - Ticker: BCA - Exchange: ASX - Region: Western Australia - Primary commodity: Manganese - Secondary commodities: Iron ore, Silicon dioxide, Aluminium oxide, Phosphorus, Loss on ignition - Document categories: Resource update, Metallurgy - Extracted: 2026-09-29 23:40:34 UTC Narrative sentiment: 0.90 · Bullish ## Minestarters Atlas summary Black Canyon Limited has announced a maiden JORC 2012 compliant Mineral Resource Estimate for its Wandanya Project, totaling 23.6 Mt at 25.8% Mn and 12.5 Mt at 54.9% Fe. The estimate demonstrates high confidence, with over 90% of the manganese resource and 100% of the iron resource classified as Measured and Indicated. Initial metallurgical testwork indicates strong potential for high-quality beneficiated products and Direct Ship Ore \(DSO\) for both commodities, with a Scoping Study currently underway. Reasoning: Black Canyon Limited announced a significant maiden JORC 2012 compliant Mineral Resource Estimate for its Wandanya Project, establishing a substantial, high-confidence resource base for both manganese and iron, supported by positive metallurgical testwork and shallow mineralization. - Positive factor: Maiden Mineral Resource Estimate for both manganese and iron - Positive factor: High confidence classification with over 90% of manganese resource in Measured and Indicated categories and 100% of iron resource in Measured category - Positive factor: Significant grades for both manganese \(25.8% Mn\) and iron \(54.9% Fe\), including DSO potential - Positive factor: Positive pilot-scale metallurgical testwork demonstrating high recoveries and product grades for manganese - Positive factor: Shallow, near-surface mineralization amenable to open-pit mining - Positive factor: JORC 2012 compliant estimate with Competent Person sign-off - Negative factor: No production or reconciliation data available as it is a maiden estimate - Negative factor: Further detailed metallurgical testwork is planned, indicating ongoing de-risking - Negative factor: Elevated silicon in iron ore may be a penalty element Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 129 ## Classification and evidence **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: the document describes a gravity route \("gravity"\) ## Extracted facts Stored fact records: 129. Some facts used in scoring do not have a stored record. ## Resource Estimates (129) ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-0) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:b0f842edb6fe60cff681 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 15500000 - Grade: 26.9 - Grade Unit: % - Contained Metal: 4200000 - Contained Unit: t - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Measured resource for manganese at a good grade, contributing significantly to the maiden MRE. - Positive factor: High confidence Measured category - Positive factor: Significant tonnage and grade for manganese - Positive factor: Part of a maiden MRE Evidence · table > 26.9 Context: 15.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-1) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:b0f842edb6fe60cff681 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 15500000 - Grade: 5.7 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese resource, contributing to the overall resource profile. - Positive factor: High confidence Measured category - Positive factor: Part of a maiden MRE Evidence · table > 5.7 Context: 15.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-2) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:b0f842edb6fe60cff681 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 15500000 - Grade: 18.9 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 18.9 Context: 15.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-3) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:b0f842edb6fe60cff681 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 15500000 - Grade: 5.1 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 5.1 Context: 15.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-4) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:b0f842edb6fe60cff681 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 15500000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 15.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-5) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:b0f842edb6fe60cff681 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 15500000 - Grade: 17.5 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 17.5 Context: 15.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-6) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e7515f0d7425ab9d92fb - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 6300000 - Grade: 22.9 - Grade Unit: % - Contained Metal: 1400000 - Contained Unit: t - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Indicated resource for manganese at a good grade, contributing significantly to the maiden MRE. - Positive factor: Good confidence Indicated category - Positive factor: Significant tonnage and grade for manganese - Positive factor: Part of a maiden MRE Evidence · table > 22.9 Context: 6.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-7) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e7515f0d7425ab9d92fb - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 6300000 - Grade: 3.4 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese resource, contributing to the overall resource profile. - Positive factor: Good confidence Indicated category - Positive factor: Part of a maiden MRE Evidence · table > 3.4 Context: 6.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-8) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e7515f0d7425ab9d92fb - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 6300000 - Grade: 15.8 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 15.8 Context: 6.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-9) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e7515f0d7425ab9d92fb - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 6300000 - Grade: 4.3 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 4.3 Context: 6.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-10) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e7515f0d7425ab9d92fb - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 6300000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 6.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-11) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e7515f0d7425ab9d92fb - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 6300000 - Grade: 25.3 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 25.3 Context: 6.3 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-12) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:9beed5c525d469f33170 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1800000 - Grade: 26.7 - Grade Unit: % - Contained Metal: 500000 - Contained Unit: t - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A good grade Inferred resource for manganese, providing future exploration upside but with lower confidence than Measured or Indicated. - Positive factor: Good grade for manganese - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 26.7 Context: 1.8 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-13) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:9beed5c525d469f33170 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1800000 - Grade: 3 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese resource, contributing to the overall resource profile. - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 3.0 Context: 1.8 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-14) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:9beed5c525d469f33170 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1800000 - Grade: 13.8 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements - Negative factor: Inferred category has lower geological confidence Evidence · table > 13.8 Context: 1.8 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-15) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:9beed5c525d469f33170 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1800000 - Grade: 3.9 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 3.9 Context: 1.8 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-16) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:9beed5c525d469f33170 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1800000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 0.02 Context: 1.8 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-17) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:9beed5c525d469f33170 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1800000 - Grade: 24.1 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing - Negative factor: Inferred category has lower geological confidence Evidence · table > 24.1 Context: 1.8 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-18) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:10fb9cd6790ebee78138 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 23600000 - Grade: 25.8 - Grade Unit: % - Contained Metal: 6100000 - Contained Unit: t - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The overall maiden manganese resource is substantial and high-grade, representing a significant asset for the company. - Positive factor: Significant total tonnage and grade for manganese - Positive factor: Maiden MRE for the project Evidence · table > 25.8 Context: 23.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-19) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:10fb9cd6790ebee78138 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 23600000 - Grade: 4.9 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron is present as a byproduct in the overall manganese resource, adding to the project's potential. - Positive factor: Maiden MRE for the project Evidence · table > 4.9 Context: 23.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-20) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:10fb9cd6790ebee78138 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 23600000 - Grade: 17.7 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 17.7 Context: 23.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-21) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:10fb9cd6790ebee78138 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 23600000 - Grade: 4.8 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 4.8 Context: 23.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-22) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:10fb9cd6790ebee78138 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 23600000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 23.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-23) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:10fb9cd6790ebee78138 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 23600000 - Grade: 20.1 - Grade Unit: % - Cutoff Grade: 12 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 20.1 Context: 23.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-24) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:c52d3a72e02ba3ed25d3 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11600000 - Grade: 0.7 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Manganese is present as a byproduct in the iron resource, contributing to the overall resource profile. - Positive factor: High confidence Measured category - Positive factor: Part of a maiden MRE Evidence · table > 0.7 Context: 11.6 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-25) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:c52d3a72e02ba3ed25d3 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11600000 - Grade: 55.1 - Grade Unit: % - Contained Metal: 6400000 - Contained Unit: t - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Measured resource for iron at a high grade, contributing significantly to the maiden MRE. - Positive factor: High confidence Measured category - Positive factor: Significant tonnage and high grade for iron - Positive factor: Part of a maiden MRE Evidence · table > 55.1 Context: 11.6 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-26) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:c52d3a72e02ba3ed25d3 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11600000 - Grade: 13.7 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 13.7 Context: 11.6 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-27) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:c52d3a72e02ba3ed25d3 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11600000 - Grade: 2.4 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Low aluminium oxide content is a positive for iron ore quality. - Positive factor: Relatively low aluminium oxide content is favorable for iron ore quality Evidence · table > 2.4 Context: 11.6 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-28) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:c52d3a72e02ba3ed25d3 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11600000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 11.6 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-29) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:c52d3a72e02ba3ed25d3 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11600000 - Grade: 3.3 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Low loss on ignition is a positive for iron ore quality. - Positive factor: Relatively low loss on ignition is favorable for iron ore quality Evidence · table > 3.3 Context: 11.6 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-30) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:67dd0aedea5cbbe70659 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 800000 - Grade: 0.7 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Manganese is present as a byproduct in the iron resource, contributing to the overall resource profile. - Positive factor: Good confidence Indicated category - Positive factor: Part of a maiden MRE Evidence · table > 0.7 Context: 0.8 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-31) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:67dd0aedea5cbbe70659 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 800000 - Grade: 51.5 - Grade Unit: % - Contained Metal: 400000 - Contained Unit: t - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Indicated resource for iron at a good grade, contributing significantly to the maiden MRE. - Positive factor: Good confidence Indicated category - Positive factor: Significant tonnage and good grade for iron - Positive factor: Part of a maiden MRE Evidence · table > 51.5 Context: 0.8 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-32) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:67dd0aedea5cbbe70659 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 800000 - Grade: 16.1 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 16.1 Context: 0.8 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-33) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:67dd0aedea5cbbe70659 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 800000 - Grade: 2.2 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Low aluminium oxide content is a positive for iron ore quality. - Positive factor: Relatively low aluminium oxide content is favorable for iron ore quality Evidence · table > 2.2 Context: 0.8 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-34) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:67dd0aedea5cbbe70659 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 800000 - Grade: 0.03 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.03 Context: 0.8 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-35) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:67dd0aedea5cbbe70659 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 800000 - Grade: 4.6 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Low loss on ignition is a positive for iron ore quality. - Positive factor: Relatively low loss on ignition is favorable for iron ore quality Evidence · table > 4.6 Context: 0.8 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-36) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e41b064d8e8c2bbe2f1e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 20000 - Grade: 0.1 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Manganese is present as a byproduct in the iron resource, contributing to the overall resource profile. - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 0.1 Context: 0.02 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-37) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e41b064d8e8c2bbe2f1e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 20000 - Grade: 51.2 - Grade Unit: % - Contained Metal: 0 - Contained Unit: t - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A good grade Inferred resource for iron, providing future exploration upside but with lower confidence and very small tonnage. - Positive factor: Good grade for iron - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence - Negative factor: Very small tonnage Evidence · table > 51.2 Context: 0.02 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-38) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e41b064d8e8c2bbe2f1e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 20000 - Grade: 15.7 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements - Negative factor: Inferred category has lower geological confidence Evidence · table > 15.7 Context: 0.02 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-39) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e41b064d8e8c2bbe2f1e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 20000 - Grade: 2.7 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Low aluminium oxide content is a positive for iron ore quality. - Positive factor: Relatively low aluminium oxide content is favorable for iron ore quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 2.7 Context: 0.02 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-40) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e41b064d8e8c2bbe2f1e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 20000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 0.02 Context: 0.02 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-41) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e41b064d8e8c2bbe2f1e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 20000 - Grade: 4.8 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Low loss on ignition is a positive for iron ore quality. - Positive factor: Relatively low loss on ignition is favorable for iron ore quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 4.8 Context: 0.02 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-42) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:1590d27503b033ca2343 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 12500000 - Grade: 0.7 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Manganese is present as a byproduct in the overall iron resource, adding to the project's potential. - Positive factor: Maiden MRE for the project Evidence · table > 0.7 Context: 12.5 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-43) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:1590d27503b033ca2343 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 12500000 - Grade: 54.9 - Grade Unit: % - Contained Metal: 6800000 - Contained Unit: t - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The overall maiden iron resource is substantial and high-grade, representing a significant asset for the company. - Positive factor: Significant total tonnage and high grade for iron - Positive factor: Maiden MRE for the project Evidence · table > 54.9 Context: 12.5 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-44) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:1590d27503b033ca2343 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 12500000 - Grade: 13.8 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 13.8 Context: 12.5 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-45) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:1590d27503b033ca2343 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 12500000 - Grade: 2.4 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Low aluminium oxide content is a positive for iron ore quality. - Positive factor: Relatively low aluminium oxide content is favorable for iron ore quality Evidence · table > 2.4 Context: 12.5 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-46) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:1590d27503b033ca2343 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 12500000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 12.5 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-47) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:1590d27503b033ca2343 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 12500000 - Grade: 3.4 - Grade Unit: % - Cutoff Grade: 50 - Cutoff Unit: % Fe #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Low loss on ignition is a positive for iron ore quality. - Positive factor: Relatively low loss on ignition is favorable for iron ore quality Evidence · table > 3.4 Context: 12.5 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-48) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:fa8faca057f5bcf6351e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11300000 - Grade: 31.1 - Grade Unit: % - Contained Metal: 3500000 - Contained Unit: t - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Measured resource for manganese at a high grade, reported at a higher cut-off, indicating a high-grade core. - Positive factor: High confidence Measured category - Positive factor: Significant tonnage and high grade for manganese - Positive factor: Part of a maiden MRE Evidence · table > 31.1 Context: 11.3 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-49) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:fa8faca057f5bcf6351e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11300000 - Grade: 5.4 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese resource, contributing to the overall resource profile. - Positive factor: High confidence Measured category - Positive factor: Part of a maiden MRE Evidence · table > 5.4 Context: 11.3 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-50) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:fa8faca057f5bcf6351e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11300000 - Grade: 17.7 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 17.7 Context: 11.3 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-51) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:fa8faca057f5bcf6351e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11300000 - Grade: 5 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 5.0 Context: 11.3 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-52) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:fa8faca057f5bcf6351e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11300000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 11.3 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-53) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:fa8faca057f5bcf6351e - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 11300000 - Grade: 16 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 16.0 Context: 11.3 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-54) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:95340edffc44ee464b11 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 27.3 - Grade Unit: % - Contained Metal: 1100000 - Contained Unit: t - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Indicated resource for manganese at a good grade, reported at a higher cut-off, indicating a high-grade core. - Positive factor: Good confidence Indicated category - Positive factor: Significant tonnage and good grade for manganese - Positive factor: Part of a maiden MRE Evidence · table > 27.3 Context: 4.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-55) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:95340edffc44ee464b11 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 2.9 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese resource, contributing to the overall resource profile. - Positive factor: Good confidence Indicated category - Positive factor: Part of a maiden MRE Evidence · table > 2.9 Context: 4.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-56) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:95340edffc44ee464b11 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 14.2 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 14.2 Context: 4.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-57) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:95340edffc44ee464b11 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 3.8 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 3.8 Context: 4.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-58) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:95340edffc44ee464b11 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 4.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-59) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:95340edffc44ee464b11 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 24.5 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 24.5 Context: 4.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-60) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:ea65172be1abcab60eca - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1500000 - Grade: 29 - Grade Unit: % - Contained Metal: 400000 - Contained Unit: t - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A good grade Inferred resource for manganese, providing future exploration upside but with lower confidence than Measured or Indicated. - Positive factor: Good grade for manganese - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 29.0 Context: 1.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-61) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:ea65172be1abcab60eca - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1500000 - Grade: 2.9 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese resource, contributing to the overall resource profile. - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 2.9 Context: 1.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-62) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:ea65172be1abcab60eca - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1500000 - Grade: 13.2 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements - Negative factor: Inferred category has lower geological confidence Evidence · table > 13.2 Context: 1.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-63) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:ea65172be1abcab60eca - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1500000 - Grade: 3.7 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 3.7 Context: 1.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-64) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:ea65172be1abcab60eca - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1500000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 0.02 Context: 1.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-65) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:ea65172be1abcab60eca - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1500000 - Grade: 23.3 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing - Negative factor: Inferred category has lower geological confidence Evidence · table > 23.3 Context: 1.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-66) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:8b1ed151dc5649358953 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 16800000 - Grade: 30 - Grade Unit: % - Contained Metal: 5100000 - Contained Unit: t - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The overall maiden manganese resource at a higher cut-off is substantial and high-grade, indicating a strong high-grade core. - Positive factor: Significant total tonnage and high grade for manganese at a higher cut-off - Positive factor: Maiden MRE for the project Evidence · table > 30.0 Context: 16.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-67) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:8b1ed151dc5649358953 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 16800000 - Grade: 4.6 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron is present as a byproduct in the overall manganese resource, adding to the project's potential. - Positive factor: Maiden MRE for the project Evidence · table > 4.6 Context: 16.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-68) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:8b1ed151dc5649358953 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 16800000 - Grade: 16.5 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 16.5 Context: 16.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-69) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:8b1ed151dc5649358953 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 16800000 - Grade: 4.6 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 4.6 Context: 16.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-70) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:8b1ed151dc5649358953 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 16800000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 16.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Wandanya Deposit [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-71) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:8b1ed151dc5649358953 - Deposit or zone: Wandanya Deposit - Mining method: open\_pit #### Resource Data - Tonnes: 16800000 - Grade: 18.7 - Grade Unit: % - Cutoff Grade: 20 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 18.7 Context: 16.8 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-72) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:52bc00d29e5ab5ede017 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 12500000 - Grade: 29.2 - Grade Unit: % - Contained Metal: 3600000 - Contained Unit: t - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Measured resource for manganese oxide at a high grade, contributing significantly to the maiden MRE. - Positive factor: High confidence Measured category - Positive factor: Significant tonnage and high grade for manganese oxide - Positive factor: Part of a maiden MRE Evidence · table > 29.2 Context: 12.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-73) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:52bc00d29e5ab5ede017 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 12500000 - Grade: 5.9 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese oxide resource, contributing to the overall resource profile. - Positive factor: High confidence Measured category - Positive factor: Part of a maiden MRE Evidence · table > 5.9 Context: 12.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-74) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:52bc00d29e5ab5ede017 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 12500000 - Grade: 18.9 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 18.9 Context: 12.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-75) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:52bc00d29e5ab5ede017 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 12500000 - Grade: 5.2 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 5.2 Context: 12.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-76) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:52bc00d29e5ab5ede017 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 12500000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 12.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-77) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:52bc00d29e5ab5ede017 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 12500000 - Grade: 16 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 16.0 Context: 12.5 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-78) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:013197c6156029fcdfeb - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 3100000 - Grade: 25.4 - Grade Unit: % - Contained Metal: 800000 - Contained Unit: t - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Indicated resource for manganese oxide at a good grade, contributing significantly to the maiden MRE. - Positive factor: Good confidence Indicated category - Positive factor: Significant tonnage and good grade for manganese oxide - Positive factor: Part of a maiden MRE Evidence · table > 25.4 Context: 3.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-79) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:013197c6156029fcdfeb - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 3100000 - Grade: 3.5 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese oxide resource, contributing to the overall resource profile. - Positive factor: Good confidence Indicated category - Positive factor: Part of a maiden MRE Evidence · table > 3.5 Context: 3.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-80) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:013197c6156029fcdfeb - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 3100000 - Grade: 15.5 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 15.5 Context: 3.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-81) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:013197c6156029fcdfeb - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 3100000 - Grade: 4.2 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 4.2 Context: 3.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-82) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:013197c6156029fcdfeb - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 3100000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 3.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-83) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:013197c6156029fcdfeb - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 3100000 - Grade: 23.6 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 23.6 Context: 3.1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-84) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e42263fc924a02a555c7 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1100000 - Grade: 28.8 - Grade Unit: % - Contained Metal: 300000 - Contained Unit: t - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A good grade Inferred resource for manganese oxide, providing future exploration upside but with lower confidence than Measured or Indicated. - Positive factor: Good grade for manganese oxide - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 28.8 Context: 1.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-85) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e42263fc924a02a555c7 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1100000 - Grade: 2.9 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese oxide resource, contributing to the overall resource profile. - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 2.9 Context: 1.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-86) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e42263fc924a02a555c7 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1100000 - Grade: 13.9 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements - Negative factor: Inferred category has lower geological confidence Evidence · table > 13.9 Context: 1.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-87) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e42263fc924a02a555c7 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1100000 - Grade: 3.8 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 3.8 Context: 1.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-88) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e42263fc924a02a555c7 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1100000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 0.02 Context: 1.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-89) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:e42263fc924a02a555c7 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 1100000 - Grade: 22.4 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing - Negative factor: Inferred category has lower geological confidence Evidence · table > 22.4 Context: 1.1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Oxide Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-90) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:414d5c2c720ad41fb636 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Tonnes: 16600000 - Grade: 28.4 - Grade Unit: % - Contained Metal: 4700000 - Contained Unit: t - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The overall maiden manganese oxide resource is substantial and high-grade, representing a significant asset for the company. - Positive factor: Significant total tonnage and high grade for manganese oxide - Positive factor: Maiden MRE for the project Evidence · table > 28.4 Context: 16.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Oxide Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-91) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:414d5c2c720ad41fb636 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Tonnes: 16600000 - Grade: 5.2 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron is present as a byproduct in the overall manganese oxide resource, adding to the project's potential. - Positive factor: Maiden MRE for the project Evidence · table > 5.2 Context: 16.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Oxide Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-92) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:414d5c2c720ad41fb636 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Tonnes: 16600000 - Grade: 18 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 18.0 Context: 16.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Oxide Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-93) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:414d5c2c720ad41fb636 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Tonnes: 16600000 - Grade: 4.9 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 4.9 Context: 16.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Oxide Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-94) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:414d5c2c720ad41fb636 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Tonnes: 16600000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 16.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Oxide Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-95) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:414d5c2c720ad41fb636 - Deposit or zone: Manganese Oxide Resource - Mining method: open\_pit #### Resource Data - Tonnes: 16600000 - Grade: 17.8 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 17.8 Context: 16.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-96) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:6bad1e6c6d254d1672f3 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 1000000 - Grade: 27 - Grade Unit: % - Contained Metal: 300000 - Contained Unit: t - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Measured resource for manganese carbonate at a good grade, contributing significantly to the maiden MRE. - Positive factor: High confidence Measured category - Positive factor: Good grade for manganese carbonate - Positive factor: Part of a maiden MRE Evidence · table > 27.0 Context: 1.0 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-97) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:6bad1e6c6d254d1672f3 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 1000000 - Grade: 3.1 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese carbonate resource, contributing to the overall resource profile. - Positive factor: High confidence Measured category - Positive factor: Part of a maiden MRE Evidence · table > 3.1 Context: 1.0 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-98) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:6bad1e6c6d254d1672f3 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 1000000 - Grade: 13.2 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 13.2 Context: 1.0 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-99) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:6bad1e6c6d254d1672f3 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 1000000 - Grade: 4 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 4.0 Context: 1.0 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-100) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:6bad1e6c6d254d1672f3 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 1000000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 1.0 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-101) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:6bad1e6c6d254d1672f3 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 1000000 - Grade: 25.4 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 25.4 Context: 1.0 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-102) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:3fda79267ad471cf351e - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 1900000 - Grade: 25.5 - Grade Unit: % - Contained Metal: 500000 - Contained Unit: t - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Indicated resource for manganese carbonate at a good grade, contributing significantly to the maiden MRE. - Positive factor: Good confidence Indicated category - Positive factor: Significant tonnage and good grade for manganese carbonate - Positive factor: Part of a maiden MRE Evidence · table > 25.5 Context: 1.9 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-103) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:3fda79267ad471cf351e - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 1900000 - Grade: 2.6 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese carbonate resource, contributing to the overall resource profile. - Positive factor: Good confidence Indicated category - Positive factor: Part of a maiden MRE Evidence · table > 2.6 Context: 1.9 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-104) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:3fda79267ad471cf351e - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 1900000 - Grade: 14 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 14.0 Context: 1.9 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-105) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:3fda79267ad471cf351e - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 1900000 - Grade: 3.8 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 3.8 Context: 1.9 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-106) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:3fda79267ad471cf351e - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 1900000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 1.9 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-107) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:3fda79267ad471cf351e - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 1900000 - Grade: 26.7 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 26.7 Context: 1.9 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-108) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:bb4fad54dd25e1ffdac5 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 25.2 - Grade Unit: % - Contained Metal: 200000 - Contained Unit: t - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A good grade Inferred resource for manganese carbonate, providing future exploration upside but with lower confidence than Measured or Indicated. - Positive factor: Good grade for manganese carbonate - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 25.2 Context: 0.7 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-109) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:bb4fad54dd25e1ffdac5 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 3.1 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese carbonate resource, contributing to the overall resource profile. - Positive factor: Part of a maiden MRE - Negative factor: Inferred category has lower geological confidence Evidence · table > 3.1 Context: 0.7 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-110) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:bb4fad54dd25e1ffdac5 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 13 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements - Negative factor: Inferred category has lower geological confidence Evidence · table > 13.0 Context: 0.7 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-111) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:bb4fad54dd25e1ffdac5 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 3.9 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 3.9 Context: 0.7 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-112) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:bb4fad54dd25e1ffdac5 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality - Negative factor: Inferred category has lower geological confidence Evidence · table > 0.02 Context: 0.7 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-113) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:bb4fad54dd25e1ffdac5 - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 26.3 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing - Negative factor: Inferred category has lower geological confidence Evidence · table > 26.3 Context: 0.7 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Carbonate Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-114) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:d41ded09269d37b9434c - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Tonnes: 3600000 - Grade: 25.9 - Grade Unit: % - Contained Metal: 900000 - Contained Unit: t - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: The overall maiden manganese carbonate resource is substantial and high-grade, representing a significant asset for the company. - Positive factor: Significant total tonnage and high grade for manganese carbonate - Positive factor: Maiden MRE for the project Evidence · table > 25.9 Context: 3.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Carbonate Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-115) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:d41ded09269d37b9434c - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Tonnes: 3600000 - Grade: 2.9 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron is present as a byproduct in the overall manganese carbonate resource, adding to the project's potential. - Positive factor: Maiden MRE for the project Evidence · table > 2.9 Context: 3.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Carbonate Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-116) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:d41ded09269d37b9434c - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Tonnes: 3600000 - Grade: 13.6 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 13.6 Context: 3.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Carbonate Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-117) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:d41ded09269d37b9434c - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Tonnes: 3600000 - Grade: 3.9 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 3.9 Context: 3.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Carbonate Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-118) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:d41ded09269d37b9434c - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Tonnes: 3600000 - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.02 Context: 3.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### Manganese Carbonate Resource [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-119) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:d41ded09269d37b9434c - Deposit or zone: Manganese Carbonate Resource - Mining method: open\_pit #### Resource Data - Tonnes: 3600000 - Grade: 26.3 - Grade Unit: % - Cutoff Grade: 15 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 26.3 Context: 3.6 #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-120) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:0ae45b6e6cea7376a2d8 - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 3100000 - Grade: 39 - Grade Unit: % - Contained Metal: 1200000 - Contained Unit: t - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Measured resource for manganese oxide DSO at a very high grade, indicating strong potential for direct shipping. - Positive factor: High confidence Measured category - Positive factor: Significant tonnage and very high grade for manganese oxide DSO - Positive factor: Part of a maiden MRE Evidence · table > 39.0 Context: 3.1 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-121) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:0ae45b6e6cea7376a2d8 - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 3100000 - Grade: 4 - Grade Unit: % - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese oxide DSO resource, contributing to the overall resource profile. - Positive factor: High confidence Measured category - Positive factor: Part of a maiden MRE Evidence · table > 4.0 Context: 3.1 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-122) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:0ae45b6e6cea7376a2d8 - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 3100000 - Grade: 14 - Grade Unit: % - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 14.0 Context: 3.1 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-123) Wandanya · aluminium\_oxide #### Identity - Project: Wandanya - Commodity: aluminium\_oxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:0ae45b6e6cea7376a2d8 - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 3100000 - Grade: 4.1 - Grade Unit: % - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Aluminium oxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: Aluminium oxide is a gangue element and its presence could impact processing or product quality Evidence · table > 4.1 Context: 3.1 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-124) Wandanya · phosphorus #### Identity - Project: Wandanya - Commodity: phosphorus - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:0ae45b6e6cea7376a2d8 - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 3100000 - Grade: 0.01 - Grade Unit: % - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Phosphorus is a penalty element in many commodities, and a low grade is positive. - Positive factor: Low phosphorus content is generally favorable for product quality Evidence · table > 0.01 Context: 3.1 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-125) Wandanya · loss\_on\_ignition #### Identity - Project: Wandanya - Commodity: loss\_on\_ignition - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:0ae45b6e6cea7376a2d8 - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 3100000 - Grade: 13.8 - Grade Unit: % - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Loss on ignition is a measure of volatile components, and a high value can indicate processing considerations. - Negative factor: High loss on ignition can indicate significant volatile content, potentially impacting processing Evidence · table > 13.8 Context: 3.1 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-126) Wandanya · manganese #### Identity - Project: Wandanya - Commodity: manganese - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:060eb9d563af6301072a - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 400000 - Grade: 37.9 - Grade Unit: % - Contained Metal: 100000 - Contained Unit: t - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: A substantial Indicated resource for manganese oxide DSO at a high grade, indicating strong potential for direct shipping. - Positive factor: Good confidence Indicated category - Positive factor: High grade for manganese oxide DSO - Positive factor: Part of a maiden MRE Evidence · table > 37.9 Context: 0.4 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-127) Wandanya · iron\_ore #### Identity - Project: Wandanya - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:060eb9d563af6301072a - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 400000 - Grade: 2.4 - Grade Unit: % - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Iron grade is present as a byproduct in the manganese oxide DSO resource, contributing to the overall resource profile. - Positive factor: Good confidence Indicated category - Positive factor: Part of a maiden MRE Evidence · table > 2.4 Context: 0.4 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/bca-wandanya-maiden-mineral-resource-estimate-23-6mt-25-8-mn--6fd5ebfb-950e-4300-a755-63b42e77c0d4#fact-resource-facts-128) Wandanya · silicon\_dioxide #### Identity - Project: Wandanya - Commodity: silicon\_dioxide - Region: australia\_wa - Reported Region: Western Australia - Ticker: BCA #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Greg Jones - Resource group id: resource:060eb9d563af6301072a - Deposit or zone: Manganese Oxide DSO Resource - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 400000 - Grade: 11.4 - Grade Unit: % - Cutoff Grade: 35 - Cutoff Unit: % Mn #### Prior Estimate - Resource Date: 2026-09-30 #### Lab - Laboratory: ALS Chemex #### Location - CRS: GDA94 / UTM zone 51S - Loc. Confidence: medium #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Silicon dioxide is a gangue element, and its presence at this level could impact processing or product quality. - Negative factor: High silicon dioxide content could indicate processing challenges or penalty elements Evidence · table > 11.4 Context: 0.4 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.