# Sierra Madre Secures Land Use Authorization and Expands Land Holdings at Tlacotal Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/sierra-madre-secures-land-use-authorization-and-expands-land-holdings-at-tlacota--fa3bdce0-6fc9-4294-b8a5-5a74010c6101 Original source: https://money.tmx.com/en/quote/SM/news/8562927552978794/sierra-madre-secures-land-use-authorization-and-expands-land-holdings-at-tlacota Publisher: tmx Original announcement: 2026-01-27T12:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Sierra Madre Gold and Silver Ltd. - Ticker: SM - Exchange: TSX - Region: Estado de Mexico, Mexico - Primary commodity: Silver - Secondary commodities: Gold - Document categories: Resource update, Permitting - Extracted: 2026-09-16 22:59:47 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Sierra Madre Gold and Silver Ltd. has secured a federal land use change authorization \(CUS\) for its Tlacotal property in Mexico, transitioning the land from agricultural/forestry to mining use. Additionally, the company has expanded its land holdings through new purchase agreements and an option to purchase lands for the Lopez Extension. Reasoning: The announcement is primarily a permitting and land acquisition milestone which provides optionality for future development, supported by the restatement of a 2023 resource estimate. - Positive factor: Land use authorization received for Tlacotal property - Positive factor: Expansion of land holdings via purchase agreements - Positive factor: Option to purchase private lands for Lopez Extension - Positive factor: Existing resource estimate provided for context Facts used in scoring: 4 ## Classification and evidence **Permitting Milestone** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: Company received Cambia de Suelos \(CUS\) designation for land use change from agriculture to mining. Evidence · text > authorization has been received for a change of land use for the Tlacotal property **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 provided is from 2023, making it over 2 years old relative to the 2026 publication date. Evidence · text > The 2023 NI 43-101 resource estimation for the Santa Ana vein in the East District is shown in Table 1 below. **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The resource estimate contains a significant Inferred component. Evidence · table > 544,892 Context: 544,892 ## Extracted facts Stored fact records: 4. Some facts used in scoring do not have a stored record. ## Resource Estimates (4) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/sierra-madre-secures-land-use-authorization-and-expands-land-holdings-at-tlacota--fa3bdce0-6fc9-4294-b8a5-5a74010c6101#fact-resource-facts-0) Santa Ana vein, East District, La Guitarra · silver Historical result Needs review: historical\_restatement #### Identity - Project: Santa Ana vein, East District, La Guitarra - Commodity: silver - Region: mexico - Reported Region: Estado de Mexico, Mexico - Ticker: SM #### Resource scope - Estimate type: resource - Effective date: 2023-10-24T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: David Thomas, Cristian Garcia, Gregory Smith - Resource group id: resource:3874ff3c276995619c5c - Deposit or zone: Santa Ana vein - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 761292 - Grade: 159.3 - Grade Unit: g/t - Contained Metal: 3899046 - Contained Unit: oz - Cutoff Grade: 135 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2023-10-24 #### Metal Equivalent - Metal Eq. Grade: 173.8 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-10-24T00:00:00.000Z #### Dates - Event date: 2026-01-27T00:00:00.000Z Reasoning: Indicated resource component of a 2023 estimate being restated. Evidence · table > 159.3 Context: 761,292 #### 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 **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 **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **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 2.3 years before this release ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/sierra-madre-secures-land-use-authorization-and-expands-land-holdings-at-tlacota--fa3bdce0-6fc9-4294-b8a5-5a74010c6101#fact-resource-facts-1) Santa Ana vein, East District, La Guitarra · gold Historical result Needs review: historical\_restatement #### Identity - Project: Santa Ana vein, East District, La Guitarra - Commodity: gold - Region: mexico - Reported Region: Estado de Mexico, Mexico - Ticker: SM #### Resource scope - Estimate type: resource - Effective date: 2023-10-24T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: David Thomas, Cristian Garcia, Gregory Smith - Resource group id: resource:3874ff3c276995619c5c - Deposit or zone: Santa Ana vein - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 761292 - Grade: 0.19 - Grade Unit: g/t - Contained Metal: 4650 - Contained Unit: oz - Cutoff Grade: 135 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2023-10-24 #### Metal Equivalent - Metal Eq. Grade: 173.8 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-10-24T00:00:00.000Z #### Dates - Event date: 2026-01-27T00:00:00.000Z Reasoning: Gold grade component of a 2023 estimate being restated. Evidence · table > 0.19 Context: 761,292 #### 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 **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 **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **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 2.3 years before this release ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/sierra-madre-secures-land-use-authorization-and-expands-land-holdings-at-tlacota--fa3bdce0-6fc9-4294-b8a5-5a74010c6101#fact-resource-facts-2) Santa Ana vein, East District, La Guitarra · silver Historical result Needs review: historical\_restatement #### Identity - Project: Santa Ana vein, East District, La Guitarra - Commodity: silver - Region: mexico - Reported Region: Estado de Mexico, Mexico - Ticker: SM #### Resource scope - Estimate type: resource - Effective date: 2023-10-24T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: David Thomas, Cristian Garcia, Gregory Smith - Resource group id: resource:4db781b248699bf14dc7 - Deposit or zone: Santa Ana vein - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 544892 - Grade: 178.1 - Grade Unit: g/t - Contained Metal: 3120080 - Contained Unit: oz - Cutoff Grade: 135 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2023-10-24 #### Metal Equivalent - Metal Eq. Grade: 188.4 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-10-24T00:00:00.000Z #### Dates - Event date: 2026-01-27T00:00:00.000Z Reasoning: Inferred resource component of a 2023 estimate being restated. Evidence · table > 178.1 Context: 544,892 #### 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 **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 **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **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 2.3 years before this release ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/sierra-madre-secures-land-use-authorization-and-expands-land-holdings-at-tlacota--fa3bdce0-6fc9-4294-b8a5-5a74010c6101#fact-resource-facts-3) Santa Ana vein, East District, La Guitarra · gold Historical result Needs review: historical\_restatement #### Identity - Project: Santa Ana vein, East District, La Guitarra - Commodity: gold - Region: mexico - Reported Region: Estado de Mexico, Mexico - Ticker: SM #### Resource scope - Estimate type: resource - Effective date: 2023-10-24T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: David Thomas, Cristian Garcia, Gregory Smith - Resource group id: resource:4db781b248699bf14dc7 - Deposit or zone: Santa Ana vein - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 544892 - Grade: 0.13 - Grade Unit: g/t - Contained Metal: 2328 - Contained Unit: oz - Cutoff Grade: 135 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2023-10-24 #### Metal Equivalent - Metal Eq. Grade: 188.4 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2023-10-24T00:00:00.000Z #### Dates - Event date: 2026-01-27T00:00:00.000Z Reasoning: Gold grade component of a 2023 estimate being restated. Evidence · table > 0.13 Context: 544,892 #### 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 **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 **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports **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 2.3 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.