# McEwen Files NI 43-101 Technical Report for the Tartan Mine Project in Manitoba Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/mcewen-files-ni-43-101-technical-report-for-the-tartan-mine-project-in-manitoba--e6c674f9-6dcf-4f29-aba0-271dff2260ab Original source: https://orestocks.com/company/MUX/press-releases/8704916535812429 Publisher: orestocks Original announcement: 2026-05-05T01:57:20.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-01T03:57:01.254Z Atlas analysis updated: 2026-10-01T03:57:01.254Z - Company: McEwen Inc. - Ticker: MUX - Exchange: TSX - Region: Manitoba - Primary commodity: Gold - Secondary commodities: Silver - Document categories: Resource update - Extracted: 2026-10-01 03:57:02 UTC Narrative sentiment: 0.00 · Neutral ## Minestarters Atlas summary McEwen Inc. has filed an NI 43-101 Technical Report for the Tartan Mine Project in Manitoba. The report supports the mineral resource estimate previously announced on March 23, 2026, which includes Indicated and Inferred gold resources. Reasoning: The document is a filing of a technical report supporting a previously announced resource estimate, providing high-confidence verification rather than new discovery. - Positive factor: NI 43-101 compliant - Positive factor: QA/QC verified Facts used in scoring: 2 ## Classification and evidence **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The technical report was prepared in accordance with National Instrument 43-101 standards. Evidence · text > prepared in accordance with National Instrument 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: Multiple Qualified Persons from GRE are named in the report. Evidence · text > The Qualified Persons for the report are Terre Lane, MMSA, Hamid Samari, MMSA, Dr. Todd Harvey, SME and Larry Breckenridge, P.E. ## Extracted facts Stored fact records: 2. Some facts used in scoring do not have a stored record. ## Resource Estimates (2) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/mcewen-files-ni-43-101-technical-report-for-the-tartan-mine-project-in-manitoba--e6c674f9-6dcf-4f29-aba0-271dff2260ab#fact-resource-facts-0) Tartan Mine Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: Tartan Mine Project - Commodity: gold - Region: canada\_mb - Reported Region: Manitoba - Ticker: MUX #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Terre Lane, Hamid Samari, Dr. Todd Harvey, Larry Breckenridge - Resource group id: resource:81139202d207d37a1f2c #### Resource Data - Category: indicated - Tonnes: 2619000 - Grade: 3.67 - Grade Unit: g/t - Contained Metal: 308900 - Contained Unit: oz #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2026-03-23T00:00:00.000Z #### Dates - Event date: 2026-05-05T00:00:00.000Z Reasoning: This is a restatement of the resource announced on March 23, 2026. - Positive factor: NI 43-101 compliant - Negative factor: Stale Data Re-release Evidence · text > consisting of Indicated Resources of 2,619,000 tonnes at 3.67 g/t Au for 308,900 ounces of gold #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **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 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/mcewen-files-ni-43-101-technical-report-for-the-tartan-mine-project-in-manitoba--e6c674f9-6dcf-4f29-aba0-271dff2260ab#fact-resource-facts-1) Tartan Mine Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: Tartan Mine Project - Commodity: gold - Region: canada\_mb - Reported Region: Manitoba - Ticker: MUX #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Terre Lane, Hamid Samari, Dr. Todd Harvey, Larry Breckenridge - Resource group id: resource:ef01c4afecdeb933a8b4 #### Resource Data - Category: inferred - Tonnes: 2832900 - Grade: 3.32 - Grade Unit: g/t - Contained Metal: 302700 - Contained Unit: oz #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2026-03-23T00:00:00.000Z #### Dates - Event date: 2026-05-05T00:00:00.000Z Reasoning: This is a restatement of the resource announced on March 23, 2026. - Positive factor: NI 43-101 compliant - Negative factor: Stale Data Re-release Evidence · text > Inferred Resources of 2,832,900 tonnes at 3.32 g/t Au for 302,700 ounces of gold #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **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 ## 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.