# Archive Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697 Original source: https://www.thenewswire.com/press-releases/1k3wFXe63-mithril-lidar-study-reveals-1-5-km-trend-and-historic-mines-at-la-dura-gold-silver-project-durango-mexico.html Publisher: thenewswire Original announcement: 2026-02-25T00:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-01T05:15:05.523Z Atlas analysis updated: 2026-10-01T05:15:05.523Z - Company: Mithril Silver and Gold Limited - Ticker: MTH - Exchange: Unavailable - Region: Durango State, Mexico - Primary commodity: Gold - Secondary commodities: Silver - Document categories: Other, Resource update - Extracted: 2026-10-01 05:15:06 UTC Narrative sentiment: 0.10 · Bullish ## Minestarters Atlas summary Mithril Silver and Gold Limited announced the results of a LiDAR survey at its La Dura Gold-Silver Project in Mexico, revealing a 1.5 km trend with historic mines and defining a high-priority drill target. The company also provided an update on ongoing Phase IV drilling at Copalquin Target 1 for a resource update and maiden drilling at Target 3, where mineralized quartz veins were intercepted with assays pending. The release includes a detailed re-statement of the historical JORC-compliant mineral resource estimate for Copalquin Target 1 from November 2021. Reasoning: The company has identified new high-priority drill targets at La Dura through a LiDAR survey, indicating strong exploration potential. While the detailed resource estimate provided is historical, it serves as a baseline for ongoing drilling aimed at an updated resource. - Positive factor: New high-priority drill targets identified from LiDAR survey at La Dura - Positive factor: Ongoing drilling for resource update at Copalquin Target 1 - Positive factor: Maiden drilling at Copalquin Target 3 intercepted mineralized veins - Negative factor: Resource estimate is historical \(from 2021\) - Negative factor: Assays for new drilling are pending Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 15 ## Classification and evidence **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: The resource estimate's effective date is November 17, 2021, while the document is published in February 2026, making it over 2 years old. Evidence · text > This maiden resource is detailed below \(see ASX release 17 November 2021\) **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: The resource estimate is explicitly stated to be JORC Code, 2012 Edition compliant. Evidence · text > The information in this report that relates to Mineral Resources or Ore Reserves is based on information provided in the following ASX announcement: 17 Nov 2021 - MAIDEN JORC RESOURCE **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The scientific and technical information, including the resource estimate, has been reviewed and approved by a Qualified Person within the meaning of NI 43-101. Evidence · text > Scientific and technical information in this Report has been reviewed and approved by Mr John Skeet \(FAUSIMM, CP\) Mithril’s Managing Director and Chief Executive Officer. Mr John Skeet is a qualified person within the meaning of NI 43-101. **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: Mr John Skeet \(Mithril's CEO and Managing Director\) and Mr Rodney Webster \(former Principal Geologist at AMC Consultants\) are named as Competent Persons/Qualified Persons responsible for the information and resource estimate. Evidence · text > The information in this announcement that relates to the LiDAR survey results, sampling techniques and data, metallurgical test results, mineral processing and project development and study work has been compiled by Mr John Skeet who is Mithril’s CEO and Managing Director... The information in this announcement that relates to Mineral Resources is reported by Mr Rodney Webster, former Principal Geologist at AMC Consultants Pty Ltd \(AMC\) **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 mineral resource estimate is reported using a clear cut-off grade of 2.0 g/t AuEq. Evidence · table > 2.0 g/t AuEq\* Context: Table 1 Mineral resource estimate at Target 1 El Refugio – La Soledad using a cut-off grade of 2.0 g/t AuEq\* **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 resource estimate is explicitly referred to as a 'maiden JORC mineral resource estimate' for Target 1. Evidence · text > Within 15 months of drilling in the Copalquin District, Mithril delivered a maiden JORC mineral resource estimate at the first of several target areas \(Target 1\) **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: A significant portion of the total resource \(1,725 kt out of 2,416 kt\) is classified as Inferred. Evidence · table > 1,725 Context: Total \| Inferred ## Extracted facts Stored fact records: 15. Some facts used in scoring do not have a stored record. ## Resource Estimates (15) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-0) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:900de116e09ddba522bb - Deposit or zone: El Refugio #### Resource Data - Category: indicated - Tonnes: 691000 - Grade: 5.43 - Grade Unit: g/t - Contained Metal: 121 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Indicated Gold resource for El Refugio from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) Evidence · table > 5.43 Context: 691 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-1) Copalquin District - Target 1 El Refugio – La Soledad · silver Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: silver - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:900de116e09ddba522bb - Deposit or zone: El Refugio #### Resource Data - Category: indicated - Tonnes: 691000 - Grade: 114.2 - Grade Unit: g/t - Contained Metal: 2538 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Indicated Silver resource for El Refugio from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) Evidence · table > 114.2 Context: 691 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-2) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:900de116e09ddba522bb - Deposit or zone: El Refugio #### Resource Data - Category: indicated - Tonnes: 691000 - Contained Metal: 157 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Metal Eq. Grade: 7.06 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Indicated Gold Equivalent resource for El Refugio from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) Evidence · table > 7.06 Context: 691 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-3) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:de02b32b4cbfb6ac32fa - Deposit or zone: El Refugio #### Resource Data - Category: inferred - Tonnes: 1447000 - Grade: 4.63 - Grade Unit: g/t - Contained Metal: 215 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Inferred Gold resource for El Refugio from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 4.63 Context: 1,447 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-4) Copalquin District - Target 1 El Refugio – La Soledad · silver Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: silver - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:de02b32b4cbfb6ac32fa - Deposit or zone: El Refugio #### Resource Data - Category: inferred - Tonnes: 1447000 - Grade: 137.1 - Grade Unit: g/t - Contained Metal: 6377 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Inferred Silver resource for El Refugio from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 137.1 Context: 1,447 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-5) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:de02b32b4cbfb6ac32fa - Deposit or zone: El Refugio #### Resource Data - Category: inferred - Tonnes: 1447000 - Contained Metal: 307 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Metal Eq. Grade: 6.59 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Inferred Gold Equivalent resource for El Refugio from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 6.59 Context: 1,447 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-6) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:d7f51270ad7e9b5257a5 - Deposit or zone: La Soledad #### Resource Data - Category: inferred - Tonnes: 278000 - Grade: 4.12 - Grade Unit: g/t - Contained Metal: 37 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Inferred Gold resource for La Soledad from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 4.12 Context: 278 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-7) Copalquin District - Target 1 El Refugio – La Soledad · silver Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: silver - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:d7f51270ad7e9b5257a5 - Deposit or zone: La Soledad #### Resource Data - Category: inferred - Tonnes: 278000 - Grade: 228.2 - Grade Unit: g/t - Contained Metal: 2037 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Inferred Silver resource for La Soledad from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 228.2 Context: 278 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-8) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:d7f51270ad7e9b5257a5 - Deposit or zone: La Soledad #### Resource Data - Category: inferred - Tonnes: 278000 - Contained Metal: 66 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Metal Eq. Grade: 7.38 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Inferred Gold Equivalent resource for La Soledad from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 7.38 Context: 278 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-9) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:6b4aee46c0d57ba03641 - Deposit or zone: Total #### Resource Data - Category: indicated - Tonnes: 691000 - Grade: 5.43 - Grade Unit: g/t - Contained Metal: 121 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Total Indicated Gold resource from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) Evidence · table > 5.43 Context: 691 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-10) Copalquin District - Target 1 El Refugio – La Soledad · silver Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: silver - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:6b4aee46c0d57ba03641 - Deposit or zone: Total #### Resource Data - Category: indicated - Tonnes: 691000 - Grade: 114.2 - Grade Unit: g/t - Contained Metal: 2538 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Total Indicated Silver resource from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) Evidence · table > 114.2 Context: 691 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-11) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:6b4aee46c0d57ba03641 - Deposit or zone: Total #### Resource Data - Category: indicated - Tonnes: 691000 - Contained Metal: 157 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Metal Eq. Grade: 7.06 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Total Indicated Gold Equivalent resource from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) Evidence · table > 7.06 Context: 691 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-12) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:8630e2ba9589a17bb736 - Deposit or zone: Total #### Resource Data - Category: inferred - Tonnes: 1725000 - Grade: 4.55 - Grade Unit: g/t - Contained Metal: 252 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Total Inferred Gold resource from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 4.55 Context: 1,725 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-13) Copalquin District - Target 1 El Refugio – La Soledad · silver Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: silver - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:8630e2ba9589a17bb736 - Deposit or zone: Total #### Resource Data - Category: inferred - Tonnes: 1725000 - Grade: 151.7 - Grade Unit: g/t - Contained Metal: 8414 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Total Inferred Silver resource from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 151.7 Context: 1,725 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/archive--f07155c1-b8de-4afe-8767-afb9c4207697#fact-resource-facts-14) Copalquin District - Target 1 El Refugio – La Soledad · gold Historical result Needs review: historical\_restatement #### Identity - Project: Copalquin District - Target 1 El Refugio – La Soledad - Commodity: gold - Region: mexico - Reported Region: Durango State, Mexico - Ticker: MTH #### Resource scope - Estimate type: resource - Reporting standards: jorc, ni\_43\_101 - QP Signed: Yes - Qualified person names: Rodney Webster, John Skeet - Resource group id: resource:8630e2ba9589a17bb736 - Deposit or zone: Total #### Resource Data - Category: inferred - Tonnes: 1725000 - Contained Metal: 372 - Contained Unit: koz - Cutoff Grade: 2 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-11-17 #### Metal Equivalent - Metal Eq. Grade: 6.72 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Global #### Location - Loc. Confidence: medium #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2021-11-17T00:00:00.000Z #### Dates - Event date: 2026-02-25T00:00:00.000Z Reasoning: This is a re-statement of a historical JORC/NI 43-101 compliant Total Inferred Gold Equivalent resource from 2021, providing a baseline for future updates. - Positive factor: JORC/NI 43-101 compliant - Positive factor: QP/CP signed - Positive factor: Cut-off grade disclosed - Positive factor: Metal equivalent assumptions disclosed - Negative factor: Stale estimate \(effective date 2021\) - Negative factor: Inferred resource category Evidence · table > 6.72 Context: 1,725 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 4.3 years before this release ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.