# SCN: Pit Optimisation Update Outlines Production Pathway Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64 Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03155088 Publisher: asx Original announcement: 2026-10-20T22:55:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-20T23:09:13.525Z Atlas analysis updated: 2026-10-20T23:09:13.525Z - Company: Scorpion Minerals Limited - Ticker: SCN - Exchange: ASX - Region: Western Australia - Primary commodity: Gold - Secondary commodities: Copper, Zinc, Cobalt, Silver - Document categories: Other, Resource update, Agreement transaction, Drill results - Extracted: 2026-10-20 23:09:14 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Scorpion Minerals Limited announced an updated pit optimisation for its Old Prospect Gold Deposit in Western Australia, outlining a production pathway. The study, based on a $6,000/oz gold price, identifies 314,565 tonnes at 1.6 g/t Au for 16,159 oz, representing a 203% increase in contained gold compared to a previous study. The company has also granted Andel Resources Pty Ltd an option for a Right-to-Mine Agreement, with processing planned at the nearby Kirkalocka plant. Reasoning: The updated pit optimisation for the Old Prospect Gold Deposit shows a substantial increase in contained gold and outlines a clear production pathway, supported by a right-to-mine agreement and processing at an existing plant. - Positive factor: Significant increase in contained gold from pit optimisation \(203% more\) - Positive factor: Higher gold price assumption \($6,000/oz vs $3,000/oz\) reflecting current market - Positive factor: Clear production pathway outlined with a right-to-mine agreement and processing at an existing plant - Positive factor: High confidence in the underlying resource \(72% Indicated\) - Positive factor: JORC 2012 compliant MRE - Negative factor: Pit optimisation based on existing MRE from 2021, not a new resource - Negative factor: Historical drill results re-stated, not new - Negative factor: No new metallurgical test work for Old Prospect - Negative factor: Density values for MRE assigned from local knowledge, not determined from samples - Negative factor: No external audits of the MRE Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 38 ## Classification and evidence **Tonnage Growth** Polarity: positive Definition: Significant tonnage increase \(≥15%\) vs prior estimate with grade maintained or improved. Why it applies: The new pit optimisation identifies 314,565 tonnes compared to the previous scoping study's 82,224 tonnes, representing a significant increase. Evidence · text > updated pit optimisation at A$6,000/oz identifies 314,565 tonnes at 1.6 g/t Au for 16,159 oz from single open pits at Old Prospect North and South. ... Previous scoping study by Ozz Resources Limited in April 2024 assumed $3,000/oz ... identified potential to mine 82,224 tonnes at 3g/t Au for 7,964 oz **Contained Metal Growth** Polarity: positive Definition: True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes. Why it applies: The new pit optimisation identifies 16,159 oz of gold compared to the previous scoping study's 7,964 oz, representing a 203% increase in contained gold. Evidence · text > updated pit optimisation at A$6,000/oz identifies 314,565 tonnes at 1.6 g/t Au for 16,159 oz ... The new optimisation results in 203% more gold contained **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: The Old Prospect Mineral Resource Estimate is JORC 2012 compliant. Evidence · text > Old Prospect \(North and South\) have a combined JORC 2012 compliant Mineral Resource Estimate \(MRE\) **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: Mr Michael Fotios and Mr Rob Spiers are named as Competent Persons responsible for the information in the report. Evidence · text > The information in this report that relates to the Exploration Results, Exploration Targets, Pit Optimisation and Mineral Resources at the Mt Mulcahy and Pharos Projects is based on information reviewed by Mr Michael Fotios, who is a member of the Australian Institute of Mining and Metallurgy. ... The information in this report that relates to the Mt Mulcahy Mineral Resource is based on information originally compiled by Mr Rob Spiers **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: 72% of the contained gold in the Old Prospect MRE is in the higher confidence Indicated Resource category. Evidence · text > 72% or 15,600oz is in the higher confidence Indicated Resource category **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: The Old Prospect MRE was reported on 19 November 2021, making it over 2 years old. Evidence · text > OZZ announced a maiden JORC 2012 Code reportable Indicated and Inferred Mineral Resource Estimate \(MRE\) for Old Prospect North and South on 19 November 2021 **No QA/QC Disclosure** Polarity: negative Story-specific tag Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: The JORC Table 1 section for 'Quality of assay data and laboratory tests' mentions 'No external standards were used' and 'No QAQC was undertaken on the samples' for E79 Gold Mines Limited 2023 Auger Drilling and Rock Chips, and 'No formal audits have been completed on sampling techniques and data due to the early-stage nature of the drilling' for OZZ Resources 2021 RC Drilling. Evidence · text > No external standards were used. ... No QAQC was undertaken on the samples. ... No formal audits have been completed on sampling techniques and data due to the early-stage nature of the drilling. **Deleterious Elements Present** Polarity: negative Story-specific tag Definition: Penalty elements \(arsenic, antimony, etc.\) or refractory concerns noted in the release. Why it applies: Arsenic levels are noted as high in the region overall. Evidence · text > Arsenic levels are high in the region overall. **Apparent Width Only** Polarity: negative Story-specific tag Definition: Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness. Why it applies: The historical drill intercepts are reported as downhole lengths with true width not known. Evidence · text > Intercept lengths are downhole lengths ... Downhole lengths, true width not known **Stale Data Re-release** Polarity: negative Story-specific tag Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: The drill highlights are explicitly from 'Old Prospect Historic Exploration Summary' and are not new results. Evidence · text > Old Prospect Historic Exploration Summary ... drilling highlights including: **Maiden Resource** Polarity: neutral Definition: First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component. Why it applies: The Mt Mulcahy MRE is referred to as 'Maiden Copper - Zinc Resource at Mt Mulcahy' in the reference. Evidence · text > refer ASX release 25/9/2014 “Maiden Copper - Zinc Resource at Mt Mulcahy” **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The Old Prospect MRE is an existing resource that is being used as the basis for the pit optimisation update. Evidence · text > An updated open pit optimisation has been completed at $6,000/oz for the existing Old Prospect Mineral Resource Estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: The pit optimisation provides a basis for further scoping and mining studies, which are typically part of a PEA or PFS. Evidence · text > The purpose of the open pit optimisation is to demonstrate the reasonable prospects for eventual economic extraction \(RPEEE\) as defined in the 2012 JORC Code plus provide a basis for further scoping and mining studies. ## Extracted facts Stored fact records: 35. Some facts used in scoring do not have a stored record. ## Drill Results (1) ### BWRC005 [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-drill-facts-32) Old Prospect North · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: BWRC005 - Project: Old Prospect North - Commodity: gold - Region: australia\_wa - Reported Region: australia\_wa - Ticker: SCN #### Geometry - Grade: 12.8 - Grade Unit: g/t - Intercept: 1 m #### Classification - Sample Type: drill #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical very high-grade sub-interval from the Old Prospect project, re-stated as a highlight. - Positive factor: Bonanza Intercept - Positive factor: Very high grade - Negative factor: Historical result - Negative factor: Apparent width only - Negative factor: From/to depths not specified for sub-interval Evidence · text > including 1m @ 12.8 \(BWRC005\) #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ## Resource Estimates (34) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-2) Old Prospect North · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect North - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:9c24e7340013466b1ad1 #### Resource Data - Category: indicated - Tonnes: 149879 - Grade: 1.91 - Grade Unit: g/t - Contained Metal: 9214 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Indicated Mineral Resource for Old Prospect North, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Indicated Resource category - Negative factor: Historical estimate \(2021\) Evidence · table > 1.91 Context: 149,879 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-3) Old Prospect North · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect North - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:31cf62aa9dbdf1c848dd #### Resource Data - Category: inferred - Tonnes: 62637 - Grade: 2.46 - Grade Unit: g/t - Contained Metal: 4961 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for Old Prospect North, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2021\) - Negative factor: Inferred Resource category Evidence · table > 2.46 Context: 62,637 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### Fact 3 [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-4) Old Prospect North · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect North - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:83c1ec29f61fe29a6de9 #### Resource Data - Tonnes: 212516 - Grade: 2.07 - Grade Unit: g/t - Contained Metal: 14175 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Mineral Resource for Old Prospect North, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2021\) Evidence · table > 2.07 Context: 212,516 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-5) Old Prospect South · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect South - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:639933211c920e070c35 #### Resource Data - Category: indicated - Tonnes: 79429 - Grade: 2.5 - Grade Unit: g/t - Contained Metal: 6385 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Indicated Mineral Resource for Old Prospect South, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Indicated Resource category - Negative factor: Historical estimate \(2021\) Evidence · table > 2.50 Context: 79,429 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-6) Old Prospect South · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect South - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:ca5d77456963792f40e6 #### Resource Data - Category: inferred - Tonnes: 20234 - Grade: 1.65 - Grade Unit: g/t - Contained Metal: 1075 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for Old Prospect South, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2021\) - Negative factor: Inferred Resource category Evidence · table > 1.65 Context: 20,234 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### Fact 6 [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-7) Old Prospect South · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect South - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:deb043c4c04433c4d0d5 #### Resource Data - Tonnes: 99663 - Grade: 2.33 - Grade Unit: g/t - Contained Metal: 7459 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Mineral Resource for Old Prospect South, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2021\) Evidence · table > 2.33 Context: 99,663 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-8) Old Prospect · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:e69effdebb1b59b70968 #### Resource Data - Category: indicated - Tonnes: 229308 - Grade: 2.12 - Grade Unit: g/t - Contained Metal: 15599 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Indicated Mineral Resource for Old Prospect, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Indicated Resource category - Negative factor: Historical estimate \(2021\) Evidence · table > 2.12 Context: 229,308 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-9) Old Prospect · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:1df1ea346bafa9da1a9f #### Resource Data - Category: inferred - Tonnes: 82871 - Grade: 2.27 - Grade Unit: g/t - Contained Metal: 6036 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Inferred Mineral Resource for Old Prospect, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2021\) - Negative factor: Inferred Resource category Evidence · table > 2.27 Context: 82,871 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### Fact 9 [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-10) Old Prospect · gold Historical result Needs review: historical\_restatement #### Identity - Project: Old Prospect - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:c513269999711bf92d26 #### Resource Data - Tonnes: 312395 - Grade: 2.15 - Grade Unit: g/t - Contained Metal: 21632 - Contained Unit: oz - Cutoff Grade: 0.9 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2021-11-19 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-19T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Mineral Resource for Old Prospect, forming the basis for the current pit optimisation study. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2021\) Evidence · table > 2.15 Context: 312,395 #### 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.9 years before this release ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-11) Mt Mulcahy · copper Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: copper - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:084dc079b8400fb6b436 - Deposit or zone: South Limb Pod #### Resource Data - Category: measured - Tonnes: 193000 - Grade: 3 - Grade Unit: % - Contained Metal: 5800 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Measured Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Measured Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 3.0 Context: 193,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-12) Mt Mulcahy · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:084dc079b8400fb6b436 - Deposit or zone: South Limb Pod #### Resource Data - Category: measured - Tonnes: 193000 - Grade: 4400 - Grade Unit: t - Contained Metal: 4400 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Measured Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Measured Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 4,400 Context: 193,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-13) Mt Mulcahy · cobalt Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: cobalt - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:084dc079b8400fb6b436 - Deposit or zone: South Limb Pod #### Resource Data - Category: measured - Tonnes: 193000 - Grade: 0.1 - Grade Unit: % - Contained Metal: 220 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Measured Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Measured Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 0.1 Context: 193,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-14) Mt Mulcahy · silver Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:084dc079b8400fb6b436 - Deposit or zone: South Limb Pod #### Resource Data - Category: measured - Tonnes: 193000 - Grade: 25 - Grade Unit: g/t - Contained Metal: 157000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Measured Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Measured Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 25 Context: 193,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-15) Mt Mulcahy · gold Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:084dc079b8400fb6b436 - Deposit or zone: South Limb Pod #### Resource Data - Category: measured - Tonnes: 193000 - Grade: 0.3 - Grade Unit: g/t - Contained Metal: 2000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Measured Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Measured Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 0.3 Context: 193,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-16) Mt Mulcahy · copper Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: copper - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:d0c4c4fadc2523869317 - Deposit or zone: South Limb Pod #### Resource Data - Category: indicated - Tonnes: 372000 - Grade: 2.2 - Grade Unit: % - Contained Metal: 8200 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Indicated Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Indicated Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 2.2 Context: 372,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-17) Mt Mulcahy · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:d0c4c4fadc2523869317 - Deposit or zone: South Limb Pod #### Resource Data - Category: indicated - Tonnes: 372000 - Grade: 6300 - Grade Unit: t - Contained Metal: 6300 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Indicated Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Indicated Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 6,300 Context: 372,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-18) Mt Mulcahy · cobalt Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: cobalt - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:d0c4c4fadc2523869317 - Deposit or zone: South Limb Pod #### Resource Data - Category: indicated - Tonnes: 372000 - Grade: 0.1 - Grade Unit: % - Contained Metal: 330 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Indicated Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Indicated Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 0.1 Context: 372,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-19) Mt Mulcahy · silver Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:d0c4c4fadc2523869317 - Deposit or zone: South Limb Pod #### Resource Data - Category: indicated - Tonnes: 372000 - Grade: 19 - Grade Unit: g/t - Contained Metal: 223000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Indicated Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Indicated Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 19 Context: 372,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-20) Mt Mulcahy · gold Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:d0c4c4fadc2523869317 - Deposit or zone: South Limb Pod #### Resource Data - Category: indicated - Tonnes: 372000 - Grade: 0.2 - Grade Unit: g/t - Contained Metal: 2000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Indicated Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Positive factor: Indicated Resource category - Negative factor: Historical estimate \(2014\) Evidence · table > 0.2 Context: 372,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-21) Mt Mulcahy · copper Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: copper - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:f5b2f8788f84669ba71c - Deposit or zone: South Limb Pod #### Resource Data - Category: inferred - Tonnes: 82000 - Grade: 1.5 - Grade Unit: % - Contained Metal: 1200 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 1.5 Context: 82,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-22) Mt Mulcahy · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:f5b2f8788f84669ba71c - Deposit or zone: South Limb Pod #### Resource Data - Category: inferred - Tonnes: 82000 - Grade: 1100 - Grade Unit: t - Contained Metal: 1100 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 1,100 Context: 82,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-23) Mt Mulcahy · cobalt Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: cobalt - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:f5b2f8788f84669ba71c - Deposit or zone: South Limb Pod #### Resource Data - Category: inferred - Tonnes: 82000 - Grade: 0.1 - Grade Unit: % - Contained Metal: 60 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 0.1 Context: 82,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-24) Mt Mulcahy · silver Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:f5b2f8788f84669ba71c - Deposit or zone: South Limb Pod #### Resource Data - Category: inferred - Tonnes: 82000 - Grade: 13 - Grade Unit: g/t - Contained Metal: 35000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 13 Context: 82,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-25) Mt Mulcahy · gold Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:f5b2f8788f84669ba71c - Deposit or zone: South Limb Pod #### Resource Data - Category: inferred - Tonnes: 82000 - Grade: 0.2 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 0.2 Context: 82,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### South Limb Pod [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-26) Mt Mulcahy Project · copper Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy Project - Commodity: copper - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:2fb8b72df3223e862dc7 - Deposit or zone: South Limb Pod #### Resource Data - Tonnes: 647000 - Grade: 2.4 - Grade Unit: % - Contained Metal: 15200 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) Evidence · table > 2.4 Context: 647,000 #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### South Limb Pod [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-27) Mt Mulcahy Project · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy Project - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:2fb8b72df3223e862dc7 - Deposit or zone: South Limb Pod #### Resource Data - Tonnes: 647000 - Grade: 1.8 - Grade Unit: % - Contained Metal: 11800 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) Evidence · table > 1.8 Context: 647,000 #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### South Limb Pod [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-28) Mt Mulcahy Project · cobalt Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy Project - Commodity: cobalt - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:2fb8b72df3223e862dc7 - Deposit or zone: South Limb Pod #### Resource Data - Tonnes: 647000 - Grade: 0.1 - Grade Unit: % - Contained Metal: 610 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) Evidence · table > 0.1 Context: 647,000 #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### South Limb Pod [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-29) Mt Mulcahy Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy Project - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:2fb8b72df3223e862dc7 - Deposit or zone: South Limb Pod #### Resource Data - Tonnes: 647000 - Grade: 20 - Grade Unit: g/t - Contained Metal: 415000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) Evidence · table > 20 Context: 647,000 #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### South Limb Pod [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-30) Mt Mulcahy Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy Project - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:2fb8b72df3223e862dc7 - Deposit or zone: South Limb Pod #### Resource Data - Tonnes: 647000 - Grade: 0.2 - Grade Unit: g/t - Contained Metal: 4000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is the total historical Mineral Resource for the Mt Mulcahy Project, provided as background information. - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) Evidence · table > 0.2 Context: 647,000 #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-33) Mt Mulcahy · copper Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: copper - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:57fb02372ff2772b618b #### Resource Data - Category: inferred - Tonnes: 647000 - Grade: 2.4 - Grade Unit: % - Contained Metal: 15200 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 2.4 Context: 647,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-34) Mt Mulcahy · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: zinc - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:57fb02372ff2772b618b #### Resource Data - Category: inferred - Tonnes: 647000 - Grade: 11800 - Grade Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 11,800 Context: 647,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-35) Mt Mulcahy · cobalt Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: cobalt - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:57fb02372ff2772b618b #### Resource Data - Category: inferred - Tonnes: 647000 - Grade: 0.1 - Grade Unit: % - Contained Metal: 610 - Contained Unit: t #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 0.1 Context: 647,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-36) Mt Mulcahy · silver Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: silver - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:57fb02372ff2772b618b #### Resource Data - Category: inferred - Tonnes: 647000 - Grade: 20 - Grade Unit: g/t - Contained Metal: 415000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 20 Context: 647,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/scn-pit-optimisation-update-outlines-production-pathway--dfef9221-101f-41bd-bb9f-9c1a67ebbc64#fact-resource-facts-37) Mt Mulcahy · gold Historical result Needs review: historical\_restatement #### Identity - Project: Mt Mulcahy - Commodity: gold - Region: australia\_wa - Reported Region: Western Australia - Ticker: SCN #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: Yes - Qualified person names: Michael Fotios, Rob Spiers - Resource group id: resource:57fb02372ff2772b618b #### Resource Data - Category: inferred - Tonnes: 647000 - Grade: 0.2 - Grade Unit: g/t - Contained Metal: 4000 - Contained Unit: oz #### Prior Estimate - Resource Date: 2014-09-25 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2014-09-25T00:00:00.000Z #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: This is a historical Inferred Mineral Resource for the Mt Mulcahy Project, provided as background information. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: JORC 2012 compliant - Positive factor: QP signed - Negative factor: Historical estimate \(2014\) - Negative factor: Inferred Resource category Evidence · table > 0.2 Context: 647,000 #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 12.1 years before this release ## 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.