# STM: Bramaderos resource up 72% to 6.2Moz AuEq Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03151505 Publisher: asx Original announcement: 2026-10-12T22:02:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-12T22:25:11.892Z Atlas analysis updated: 2026-10-12T22:25:11.892Z - Company: Sunstone Metals Limited - Ticker: STM - Exchange: ASX - Region: Southern Ecuador - Primary commodity: Gold - Secondary commodities: Copper, Silver - Document categories: Resource update - Extracted: 2026-10-12 22:25:12 UTC Narrative sentiment: 0.70 · Bullish ## Minestarters Atlas summary Sunstone Metals announced a significant update to its Bramaderos Gold-Copper Project Mineral Resource Estimate \(MRE\), increasing the total resource by 72% to 6.2 Moz AuEq. Notably, the higher-confidence Indicated Resource category saw a 450% increase to 3.3 Moz AuEq, establishing a strong foundation for future open-pit mine development studies. The update incorporates new discoveries at Copete-Porotillo and expansion of existing deposits, with further exploration upside identified, though average grades have declined. Reasoning: The updated MRE shows a substantial increase in total and indicated gold equivalent ounces, driven by new discoveries and expansion, which provides a robust platform for future studies. However, this growth is accompanied by a notable decline in average resource grade across all categories. - Positive factor: Tonnage Growth - Positive factor: Category Upgrade - Positive factor: Contained Metal Growth - Positive factor: QP/CP Signed - Positive factor: JORC Compliant - Positive factor: Cut-off Disclosed - Positive factor: PEA-Supporting - Negative factor: Grade Decline - Negative factor: Dilutive Growth Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 126 ## Classification and evidence **Tonnage Growth** Polarity: positive Definition: Significant tonnage increase \(≥15%\) vs prior estimate with grade maintained or improved. Why it applies: Total resource tonnage increased by 111% from 220 Mt to 464 Mt. Evidence · text > Bramaderos Mineral Resource Estimate \(MRE\) increased by 2.6Moz AuEq1 to 6.2Moz AuEq1 **Category Upgrade** Polarity: positive Definition: Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal. Why it applies: Indicated Resource increased by 450% from 40 Mt to 229 Mt. Evidence · text > Indicated Resource now totals 229M tonnes for 3.3Moz AuEq1, a 450% increase over the November 2025 MRE **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: Total contained gold equivalent metal increased by 72% from 3.6 Moz AuEq to 6.2 Moz AuEq. Evidence · text > Bramaderos Mineral Resource Estimate \(MRE\) increased by 2.6Moz AuEq1 to 6.2Moz AuEq1 **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: Ms Emily Henry, a Member of the Australasian Institute of Mining and Metallurgy \(MAusIMM\), is named as the Competent Person responsible for the Mineral Resources. Evidence · text > The information in this report that relates to Mineral Resources is based on information compiled by Ms Emily Henry, an employee of Exora Consulting Pty Ltd and a Member of the Australasian Institute of Mining and Metallurgy \(MAusIMM\). **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: The MRE is reported in accordance with the JORC Code \(2012 Edition\). Evidence · text > MRE reported at 0.30g/t AuEq cutoff grade within optimised pit shell demonstrating reasonable prospects for eventual economic extraction \(RPEEE\). **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: The MRE is reported above a cut-off grade of 0.3 g/t AuEq. Evidence · text > The MRE is reported above a cut-off grade of 0.3g/t AuEq1. **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: The increased Indicated Resource establishes a strong foundation for future studies for an open pit mine development. Evidence · text > establishing a strong foundation for future studies for a Bramaderos open pit mine development **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 MRE includes maiden MRE for Copete and Porotillo. Evidence · text > The addition of Indicated and Inferred material from the new MRE for Copete and Porotillo as a result of new and existing drilling \(1.3Moz AuEq1\) **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The announcement provides an update to the Bramaderos Mineral Resource Estimate. Evidence · text > Bramaderos Mineral Resource Estimate \(MRE\) increased by 2.6Moz AuEq1 to 6.2Moz AuEq1 **Grade Decline** Polarity: negative Definition: Average grade dropped >5% vs prior estimate — deposit economics worsening. May indicate high-grading in early drilling. Why it applies: The total AuEq grade declined by 17% from 0.50 g/t to 0.42 g/t, and Indicated AuEq grade declined by 19% from 0.56 g/t to 0.45 g/t. Evidence · table > -17% Context: 111% **Dilutive Growth** Polarity: negative Definition: Tonnage increased but contained metal flat or down — likely from lower cut-off grade, not geological expansion. Why it applies: While tonnage and contained metal increased, the average grade declined significantly across all categories, indicating growth with lower-grade material. Evidence · table > -17% Context: 111% ## Extracted facts Stored fact records: 126. Some facts used in scoring do not have a stored record. ## Resource Estimates (126) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-0) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:36f86e4b74d82fe70f05 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 229000000 - Grade: 0.32 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.32 Context: 229 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-1) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:36f86e4b74d82fe70f05 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 229000000 - Grade: 1.23 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.23 Context: 229 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-2) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:36f86e4b74d82fe70f05 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 229000000 - Grade: 530 - Grade Unit: mlbs - Contained Metal: 240 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 530 Context: 229 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-3) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:50b30c1b31c5b1cd3371 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 236000000 - Grade: 0.26 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.26 Context: 236 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-4) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:50b30c1b31c5b1cd3371 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 236000000 - Grade: 0.52 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.52 Context: 236 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-5) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:50b30c1b31c5b1cd3371 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 236000000 - Grade: 500 - Grade Unit: mlbs - Contained Metal: 230 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 500 Context: 236 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-6) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:ba2e6710811fa949838d - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 464000000 - Grade: 0.29 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.29 Context: 464 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-7) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:ba2e6710811fa949838d - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 464000000 - Grade: 0.87 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.87 Context: 464 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-8) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:ba2e6710811fa949838d - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 464000000 - Grade: 1030 - Grade Unit: mlbs - Contained Metal: 470 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1,030 Context: 464 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-9) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:7daf282b50694f1114cc - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 138000000 - Grade: 0.34 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.34 Context: 138 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-10) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:7daf282b50694f1114cc - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 138000000 - Grade: 1.29 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.29 Context: 138 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-11) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:7daf282b50694f1114cc - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 138000000 - Grade: 336 - Grade Unit: mlbs - Contained Metal: 152 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 336 Context: 138 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-12) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e9ae723ae69bf1656eef - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 108000000 - Grade: 0.28 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.28 Context: 108 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-13) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e9ae723ae69bf1656eef - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 108000000 - Grade: 0.66 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.66 Context: 108 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-14) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e9ae723ae69bf1656eef - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 108000000 - Grade: 248 - Grade Unit: mlbs - Contained Metal: 112 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 248 Context: 108 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-15) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9afa4a53e4014f918451 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 31000000 - Grade: 0.28 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.28 Context: 31 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-16) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9afa4a53e4014f918451 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 31000000 - Grade: 0.92 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.92 Context: 31 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-17) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9afa4a53e4014f918451 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 31000000 - Grade: 63 - Grade Unit: mlbs - Contained Metal: 29 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 63 Context: 31 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-18) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:46fb6e3fcf3cd7222334 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 83000000 - Grade: 0.26 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.26 Context: 83 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-19) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:46fb6e3fcf3cd7222334 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 83000000 - Grade: 0.28 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.28 Context: 83 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-20) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:46fb6e3fcf3cd7222334 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 83000000 - Grade: 154 - Grade Unit: mlbs - Contained Metal: 70 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 154 Context: 83 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-21) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:fb78db49e2c5dd11c0f6 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 169000000 - Grade: 0.33 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.33 Context: 169 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-22) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:fb78db49e2c5dd11c0f6 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 169000000 - Grade: 1.22 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.22 Context: 169 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-23) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:fb78db49e2c5dd11c0f6 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 169000000 - Grade: 398 - Grade Unit: mlbs - Contained Metal: 181 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 398 Context: 169 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-24) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:337be1ffebb9a813bf80 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 191000000 - Grade: 0.27 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.39 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.27 Context: 191 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-25) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:337be1ffebb9a813bf80 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 191000000 - Grade: 0.49 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.39 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.49 Context: 191 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-26) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:337be1ffebb9a813bf80 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 191000000 - Grade: 402 - Grade Unit: mlbs - Contained Metal: 182 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.39 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 402 Context: 191 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-27) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:95dd423eae5838a8c0cd - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 48000000 - Grade: 0.29 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.43 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.29 Context: 48 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-28) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:95dd423eae5838a8c0cd - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 48000000 - Grade: 1.39 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.43 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.39 Context: 48 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-29) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:95dd423eae5838a8c0cd - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 48000000 - Grade: 111 - Grade Unit: mlbs - Contained Metal: 51 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.43 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 111 Context: 48 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-30) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:94e6344e7b38d7ffa337 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 34000000 - Grade: 0.24 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.24 Context: 34 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-31) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:94e6344e7b38d7ffa337 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 34000000 - Grade: 0.72 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.72 Context: 34 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-32) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:94e6344e7b38d7ffa337 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 34000000 - Grade: 77 - Grade Unit: mlbs - Contained Metal: 35 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 77 Context: 34 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-33) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:eafb27ca9130f3d8c4f6 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 60000000 - Grade: 0.29 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.29 Context: 60.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-34) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:eafb27ca9130f3d8c4f6 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 60000000 - Grade: 1.26 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.26 Context: 60.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-35) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:eafb27ca9130f3d8c4f6 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 60000000 - Grade: 131 - Grade Unit: mlbs - Contained Metal: 60 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 131 Context: 60.0 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-36) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:52a5f7868d745e62c781 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 45000000 - Grade: 0.24 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.24 Context: 45 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-37) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:52a5f7868d745e62c781 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 45000000 - Grade: 0.61 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.61 Context: 45 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-38) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:52a5f7868d745e62c781 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 45000000 - Grade: 97 - Grade Unit: mlbs - Contained Metal: 44 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 97 Context: 45 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-39) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:5b86c6109de944d3d21a - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 0.4 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.40 Context: 4 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-40) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:5b86c6109de944d3d21a - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 1.28 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.28 Context: 4 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-41) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:5b86c6109de944d3d21a - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 4000000 - Grade: 10 - Grade Unit: mlbs - Contained Metal: 4.4 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 10 Context: 4 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-42) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e3e57dbcd28280084366 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 1000000 - Grade: 0.24 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.24 Context: 1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-43) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e3e57dbcd28280084366 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 1000000 - Grade: 0.39 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.39 Context: 1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-44) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e3e57dbcd28280084366 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 1000000 - Grade: 2 - Grade Unit: mlbs - Contained Metal: 0.9 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 2.0 Context: 1 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-45) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:d57281f47068d54ef85a - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 134000000 - Grade: 0.33 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.33 Context: 134 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-46) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:d57281f47068d54ef85a - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 134000000 - Grade: 1.29 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.29 Context: 134 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-47) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:d57281f47068d54ef85a - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 134000000 - Grade: 326 - Grade Unit: mlbs - Contained Metal: 148 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 326 Context: 134 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-48) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9a6e0e4714be059c46ab - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 106000000 - Grade: 0.28 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.28 Context: 106 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-49) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9a6e0e4714be059c46ab - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 106000000 - Grade: 0.65 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.65 Context: 106 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-50) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9a6e0e4714be059c46ab - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 106000000 - Grade: 244 - Grade Unit: mlbs - Contained Metal: 111 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 244 Context: 106 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-51) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:83935a333ffbde250a76 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 1000000 - Grade: 0.33 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.33 Context: 1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-52) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:83935a333ffbde250a76 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 1000000 - Grade: 0.84 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.84 Context: 1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-53) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:83935a333ffbde250a76 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 1000000 - Grade: 2 - Grade Unit: mlbs - Contained Metal: 0.9 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.41 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 2.0 Context: 1 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-54) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:0528804c41927d3557aa - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 29000000 - Grade: 0.29 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.29 Context: 29 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-55) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:0528804c41927d3557aa - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 29000000 - Grade: 0.92 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.92 Context: 29 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-56) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:0528804c41927d3557aa - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 29000000 - Grade: 59 - Grade Unit: mlbs - Contained Metal: 26.6 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 59 Context: 29 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-57) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4051cd8c9923d061752a - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 82000000 - Grade: 0.26 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.26 Context: 82 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-58) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4051cd8c9923d061752a - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 82000000 - Grade: 0.28 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.28 Context: 82 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-59) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4051cd8c9923d061752a - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 82000000 - Grade: 152 - Grade Unit: mlbs - Contained Metal: 69 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 152 Context: 82 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-60) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3afe0dbfa3ccc9495ea3 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 5000000 - Grade: 0.37 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.52 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.37 Context: 5 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-61) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3afe0dbfa3ccc9495ea3 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 5000000 - Grade: 1.17 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.52 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.17 Context: 5 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-62) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3afe0dbfa3ccc9495ea3 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 5000000 - Grade: 14 - Grade Unit: mlbs - Contained Metal: 6.3 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.52 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 14 Context: 5 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-63) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3313e2222df7bb14a073 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 2000000 - Grade: 0.27 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.27 Context: 2 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-64) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3313e2222df7bb14a073 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 2000000 - Grade: 0.63 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.63 Context: 2 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-65) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3313e2222df7bb14a073 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 2000000 - Grade: 5 - Grade Unit: mlbs - Contained Metal: 2.4 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 5 Context: 2 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-66) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:30ea4b67384116cf8122 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 164000000 - Grade: 0.33 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.33 Context: 164 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-67) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:30ea4b67384116cf8122 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 164000000 - Grade: 1.22 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.22 Context: 164 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-68) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:30ea4b67384116cf8122 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 164000000 - Grade: 385 - Grade Unit: mlbs - Contained Metal: 174 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 385 Context: 164 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-69) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:d521a386e9c79a74b86c - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 189000000 - Grade: 0.27 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.39 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.27 Context: 189 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-70) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:d521a386e9c79a74b86c - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 189000000 - Grade: 0.49 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.39 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.49 Context: 189 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-71) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:d521a386e9c79a74b86c - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 189000000 - Grade: 396 - Grade Unit: mlbs - Contained Metal: 180 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.39 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 396 Context: 189 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-72) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:8626809641a749c8fe0c - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 0 - Grade: 0.22 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.33 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.22 Context: 0 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-73) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:8626809641a749c8fe0c - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 0 - Grade: 0.12 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.33 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.12 Context: 0 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-74) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:8626809641a749c8fe0c - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 0 - Grade: 0.9 - Grade Unit: mlbs - Contained Metal: 0.4 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.33 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.9 Context: 0 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-75) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:172747e56ce264de56ec - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 10000000 - Grade: 0.25 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.25 Context: 10 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-76) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:172747e56ce264de56ec - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 10000000 - Grade: 0.69 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.69 Context: 10 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-77) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:172747e56ce264de56ec - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 10000000 - Grade: 18 - Grade Unit: mlbs - Contained Metal: 8 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 18 Context: 10 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-78) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:fa370b96dc12b882eefb - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 11000000 - Grade: 0.23 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.34 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.23 Context: 11 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-79) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:fa370b96dc12b882eefb - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 11000000 - Grade: 0.3 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.34 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.30 Context: 11 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-80) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:fa370b96dc12b882eefb - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 11000000 - Grade: 20 - Grade Unit: mlbs - Contained Metal: 8.9 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.34 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 20 Context: 11 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-81) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e67128d6436a7aaa226b - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 36000000 - Grade: 0.3 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.30 Context: 36 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-82) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e67128d6436a7aaa226b - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 36000000 - Grade: 1.46 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.46 Context: 36 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-83) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:e67128d6436a7aaa226b - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 36000000 - Grade: 87 - Grade Unit: mlbs - Contained Metal: 40 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 87 Context: 36 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-84) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:17d827b1ae4f8cfdc454 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 19000000 - Grade: 0.25 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.25 Context: 19 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-85) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:17d827b1ae4f8cfdc454 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 19000000 - Grade: 0.75 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.75 Context: 19 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-86) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:17d827b1ae4f8cfdc454 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 19000000 - Grade: 41 - Grade Unit: mlbs - Contained Metal: 19 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 41 Context: 19 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-87) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:7887c8622bba3a85c7ef - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 12000000 - Grade: 0.26 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.26 Context: 12 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-88) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:7887c8622bba3a85c7ef - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 12000000 - Grade: 1.2 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.20 Context: 12 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-89) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:7887c8622bba3a85c7ef - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 12000000 - Grade: 24 - Grade Unit: mlbs - Contained Metal: 11 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 24 Context: 12 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-90) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9510c0fe82aea33008b6 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 15000000 - Grade: 0.22 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.22 Context: 15 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-91) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9510c0fe82aea33008b6 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 15000000 - Grade: 0.67 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.67 Context: 15 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-92) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9510c0fe82aea33008b6 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 15000000 - Grade: 35 - Grade Unit: mlbs - Contained Metal: 16 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 35 Context: 15 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-93) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:0278db5287d8f86d63a7 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 38000000 - Grade: 0.3 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.30 Context: 38 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-94) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:0278db5287d8f86d63a7 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 38000000 - Grade: 1.43 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.43 Context: 38 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-95) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:0278db5287d8f86d63a7 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 38000000 - Grade: 89 - Grade Unit: mlbs - Contained Metal: 41 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 89 Context: 38 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-96) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:826e92afe469cb8f8c89 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 20000000 - Grade: 0.25 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.25 Context: 20 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-97) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:826e92afe469cb8f8c89 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 20000000 - Grade: 0.74 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.74 Context: 20 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-98) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:826e92afe469cb8f8c89 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 20000000 - Grade: 42 - Grade Unit: mlbs - Contained Metal: 19 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 42 Context: 20 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-99) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4003d0a135ac047688a9 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 22000000 - Grade: 0.26 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.26 Context: 22 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-100) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4003d0a135ac047688a9 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 22000000 - Grade: 0.97 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.97 Context: 22 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-101) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4003d0a135ac047688a9 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 22000000 - Grade: 42 - Grade Unit: mlbs - Contained Metal: 19 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 42 Context: 22 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-102) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:b7cb24e5991c6ad11eb1 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 25000000 - Grade: 0.23 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.23 Context: 25 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-103) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:b7cb24e5991c6ad11eb1 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 25000000 - Grade: 0.51 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.51 Context: 25 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-104) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:b7cb24e5991c6ad11eb1 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 25000000 - Grade: 55 - Grade Unit: mlbs - Contained Metal: 25 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 55 Context: 25 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-105) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9c5df1016e950bfcde87 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 43000000 - Grade: 0.31 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.31 Context: 43 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-106) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9c5df1016e950bfcde87 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 43000000 - Grade: 1.4 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.40 Context: 43 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-107) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:9c5df1016e950bfcde87 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: indicated - Tonnes: 43000000 - Grade: 103 - Grade Unit: mlbs - Contained Metal: 47 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 103 Context: 43 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-108) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:c838b787722479a582f9 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 22000000 - Grade: 0.25 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.25 Context: 22 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-109) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:c838b787722479a582f9 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 22000000 - Grade: 0.73 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.73 Context: 22 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-110) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:c838b787722479a582f9 - Mining method: open\_pit - Material type: transitional #### Resource Data - Category: inferred - Tonnes: 22000000 - Grade: 48 - Grade Unit: mlbs - Contained Metal: 22 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 48 Context: 22 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-111) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:075223967918c6c00557 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 186000000 - Grade: 0.32 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.32 Context: 186 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-112) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:075223967918c6c00557 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 186000000 - Grade: 1.19 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.19 Context: 186 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-113) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:075223967918c6c00557 - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: indicated - Tonnes: 186000000 - Grade: 426 - Grade Unit: mlbs - Contained Metal: 193 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.45 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 426 Context: 186 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-114) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3183bd838c2e00070ecd - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 214000000 - Grade: 0.27 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.27 Context: 214 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-115) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3183bd838c2e00070ecd - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 214000000 - Grade: 0.49 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.49 Context: 214 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-116) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:3183bd838c2e00070ecd - Mining method: open\_pit - Material type: fresh #### Resource Data - Category: inferred - Tonnes: 214000000 - Grade: 451 - Grade Unit: mlbs - Contained Metal: 205 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 451 Context: 214 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-117) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:55da0037014821353093 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 40000000 - Grade: 0.38 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.38 Context: 40 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-118) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:55da0037014821353093 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 40000000 - Grade: 1.26 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.26 Context: 40 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-119) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:55da0037014821353093 - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 40000000 - Grade: 90 - Grade Unit: mlbs - Contained Metal: 40 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 90 Context: 40 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-120) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:2cc273e677a43d2ef287 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 190000000 - Grade: 0.32 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.32 Context: 190 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-121) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:2cc273e677a43d2ef287 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 190000000 - Grade: 1.14 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.14 Context: 190 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-122) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:2cc273e677a43d2ef287 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 190000000 - Grade: 410 - Grade Unit: mlbs - Contained Metal: 190 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 410 Context: 190 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-123) gold #### Identity - Commodity: gold - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4fb5c83b25b9bd7fefe6 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 220000000 - Grade: 0.33 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 0.33 Context: 220 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-124) silver #### Identity - Commodity: silver - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4fb5c83b25b9bd7fefe6 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 220000000 - Grade: 1.16 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 1.16 Context: 220 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stm-bramaderos-resource-up-72-to-6-2moz-aueq--def23b4a-4929-41cd-a376-f976b697099d#fact-resource-facts-125) copper #### Identity - Commodity: copper - Ticker: STM #### Resource scope - Estimate type: resource - Reporting standards: jorc - Resource group id: resource:4fb5c83b25b9bd7fefe6 - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 220000000 - Grade: 490 - Grade Unit: mlbs - Contained Metal: 220 - Contained Unit: kt - Cutoff Grade: 0.3 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-12T00:00:00.000Z Reasoning: Expanded from multi-commodity resource table for completeness. - Negative factor: Fact expanded from resource table columns \(model omitted this commodity\). Evidence · table > 490 Context: 220 #### 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 **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ## 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.