# Errington Metals Announces Maiden Mineral Resource Estimate for the Sudbury Basin Project Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9 Original source: https://orestocks.com/company/EM.V/press-releases/7778496740574468 Publisher: orestocks Original announcement: 2026-09-22T10:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Errington Metals Corp. - Ticker: EM.V - Exchange: Unavailable - Region: Ontario - Primary commodity: Copper - Secondary commodities: Zinc, Lead, Gold, Silver - Document categories: Resource update - Extracted: 2026-09-22 10:18:31 UTC Narrative sentiment: 0.70 · Bullish ## Minestarters Atlas summary Errington Metals announced a maiden NI 43-101 compliant Mineral Resource Estimate for its Sudbury Basin Project, effective September 20, 2026. The estimate includes 14.20 Mt of Measured and Indicated resources at 1.20% Cu, 4.02% Zn, 1.11% Pb, 0.83 g/t Au, and 50.25 g/t Ag, along with 3.44 Mt of Inferred resources. Over 80% of the total resources are classified as Measured or Indicated, providing a strong foundation for the project, with all deposits remaining open for expansion. Reasoning: Errington Metals announced a maiden NI 43-101 compliant Mineral Resource Estimate for its Sudbury Basin Project, with over 80% of the total resources classified as Measured or Indicated, establishing a strong foundation for future development. The estimate includes significant contained metal across multiple commodities \(Cu, Zn, Pb, Au, Ag\) and notes that all deposits remain open for expansion. - Positive factor: Maiden Mineral Resource Estimate establishes a strong foundation for the project. - Positive factor: Over 80% of total resources are classified as Measured or Indicated, indicating high confidence. - Positive factor: Significant contained metal for multiple commodities \(Cu, Zn, Pb, Au, Ag\). - Positive factor: All deposits remain open for expansion, suggesting future growth potential. - Positive factor: QP/CP signed off and NI 43-101 compliant. - Negative factor: Cut-off grade for reporting is based on stope optimization, which may not reflect overall deposit economics. - Negative factor: Results from 30 drill holes are pending and not included in this MRE, indicating potential for further changes. Facts used in scoring: 42 ## Classification and evidence **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: A current resource fact retains the disclosed cut-off grade ## Extracted facts Stored fact records: 42. Some facts used in scoring do not have a stored record. ## Resource Estimates (42) ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-0) Sudbury Basin Project · copper #### Identity - Project: Sudbury Basin Project - Commodity: copper - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:0932a3f49dae8a8284e7 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: measured - Tonnes: 7652664 - Grade: 1.13 - Grade Unit: % - Contained Metal: 86175 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for copper at Errington deposit, contributing significantly to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained copper. - Positive factor: Part of a maiden resource estimate. Evidence · table > 1.13 Context: 7,652,664 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-1) Sudbury Basin Project · zinc #### Identity - Project: Sudbury Basin Project - Commodity: zinc - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:0932a3f49dae8a8284e7 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: measured - Tonnes: 7652664 - Grade: 3.61 - Grade Unit: % - Contained Metal: 275910 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for zinc at Errington deposit, contributing significantly to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained zinc. - Positive factor: Part of a maiden resource estimate. Evidence · table > 3.61 Context: 7,652,664 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-2) Sudbury Basin Project · lead #### Identity - Project: Sudbury Basin Project - Commodity: lead - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:0932a3f49dae8a8284e7 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: measured - Tonnes: 7652664 - Grade: 0.99 - Grade Unit: % - Contained Metal: 76089 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for lead at Errington deposit, contributing significantly to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained lead. - Positive factor: Part of a maiden resource estimate. Evidence · table > 0.99 Context: 7,652,664 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-3) Sudbury Basin Project · gold #### Identity - Project: Sudbury Basin Project - Commodity: gold - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:0932a3f49dae8a8284e7 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: measured - Tonnes: 7652664 - Grade: 0.81 - Grade Unit: g/t - Contained Metal: 198143 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for gold at Errington deposit, contributing significantly to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained gold. - Positive factor: Part of a maiden resource estimate. Evidence · table > 0.81 Context: 7,652,664 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-4) Sudbury Basin Project · silver #### Identity - Project: Sudbury Basin Project - Commodity: silver - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:0932a3f49dae8a8284e7 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: measured - Tonnes: 7652664 - Grade: 46.08 - Grade Unit: g/t - Contained Metal: 11337846 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for silver at Errington deposit, contributing significantly to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained silver. - Positive factor: Part of a maiden resource estimate. Evidence · table > 46.08 Context: 7,652,664 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-5) Sudbury Basin Project · copper\_equivalent #### Identity - Project: Sudbury Basin Project - Commodity: copper\_equivalent - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:0932a3f49dae8a8284e7 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: measured - Tonnes: 7652664 - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for copper equivalent at Errington deposit, contributing significantly to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained copper equivalent. - Positive factor: Part of a maiden resource estimate. Evidence · table > 2.54 Context: 7,652,664 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-6) Sudbury Basin Project · copper #### Identity - Project: Sudbury Basin Project - Commodity: copper - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:54a5adfc84269efae504 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2968518 - Grade: 1.13 - Grade Unit: % - Contained Metal: 33572 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.79 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for copper at Errington deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained copper. - Positive factor: Part of a maiden resource estimate. Evidence · table > 1.13 Context: 2,968,518 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-7) Sudbury Basin Project · zinc #### Identity - Project: Sudbury Basin Project - Commodity: zinc - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:54a5adfc84269efae504 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2968518 - Grade: 4.55 - Grade Unit: % - Contained Metal: 134936 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.79 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for zinc at Errington deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained zinc. - Positive factor: Part of a maiden resource estimate. Evidence · table > 4.55 Context: 2,968,518 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-8) Sudbury Basin Project · lead #### Identity - Project: Sudbury Basin Project - Commodity: lead - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:54a5adfc84269efae504 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2968518 - Grade: 1.3 - Grade Unit: % - Contained Metal: 38475 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.79 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for lead at Errington deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained lead. - Positive factor: Part of a maiden resource estimate. Evidence · table > 1.30 Context: 2,968,518 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-9) Sudbury Basin Project · gold #### Identity - Project: Sudbury Basin Project - Commodity: gold - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:54a5adfc84269efae504 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2968518 - Grade: 0.81 - Grade Unit: g/t - Contained Metal: 77051 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.79 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for gold at Errington deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained gold. - Positive factor: Part of a maiden resource estimate. Evidence · table > 0.81 Context: 2,968,518 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-10) Sudbury Basin Project · silver #### Identity - Project: Sudbury Basin Project - Commodity: silver - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:54a5adfc84269efae504 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2968518 - Grade: 54.58 - Grade Unit: g/t - Contained Metal: 5209514 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.79 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for silver at Errington deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained silver. - Positive factor: Part of a maiden resource estimate. Evidence · table > 54.58 Context: 2,968,518 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-11) Sudbury Basin Project · copper\_equivalent #### Identity - Project: Sudbury Basin Project - Commodity: copper\_equivalent - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:54a5adfc84269efae504 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2968518 - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.79 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for copper equivalent at Errington deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained copper equivalent. - Positive factor: Part of a maiden resource estimate. Evidence · table > 2.79 Context: 2,968,518 #### 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-12) Sudbury Basin Project · copper #### Identity - Project: Sudbury Basin Project - Commodity: copper - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:9dc32854b598ec67bb92 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: measured - Tonnes: 2000962 - Grade: 1.33 - Grade Unit: % - Contained Metal: 26621 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.05 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for copper at Vermilion deposit, contributing to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained copper. - Positive factor: Part of a maiden resource estimate. Evidence · table > 1.33 Context: 2,000,962 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-13) Sudbury Basin Project · zinc #### Identity - Project: Sudbury Basin Project - Commodity: zinc - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:9dc32854b598ec67bb92 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: measured - Tonnes: 2000962 - Grade: 4.53 - Grade Unit: % - Contained Metal: 90724 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.05 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for zinc at Vermilion deposit, contributing to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained zinc. - Positive factor: Part of a maiden resource estimate. Evidence · table > 4.53 Context: 2,000,962 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-14) Sudbury Basin Project · lead #### Identity - Project: Sudbury Basin Project - Commodity: lead - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:9dc32854b598ec67bb92 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: measured - Tonnes: 2000962 - Grade: 1.24 - Grade Unit: % - Contained Metal: 24804 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.05 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for lead at Vermilion deposit, contributing to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained lead. - Positive factor: Part of a maiden resource estimate. Evidence · table > 1.24 Context: 2,000,962 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-15) Sudbury Basin Project · gold #### Identity - Project: Sudbury Basin Project - Commodity: gold - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:9dc32854b598ec67bb92 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: measured - Tonnes: 2000962 - Grade: 0.9 - Grade Unit: g/t - Contained Metal: 58087 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.05 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for gold at Vermilion deposit, contributing to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained gold. - Positive factor: Part of a maiden resource estimate. Evidence · table > 0.90 Context: 2,000,962 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-16) Sudbury Basin Project · silver #### Identity - Project: Sudbury Basin Project - Commodity: silver - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:9dc32854b598ec67bb92 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: measured - Tonnes: 2000962 - Grade: 56.75 - Grade Unit: g/t - Contained Metal: 3650558 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.05 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for silver at Vermilion deposit, contributing to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained silver. - Positive factor: Part of a maiden resource estimate. Evidence · table > 56.75 Context: 2,000,962 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-17) Sudbury Basin Project · copper\_equivalent #### Identity - Project: Sudbury Basin Project - Commodity: copper\_equivalent - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:9dc32854b598ec67bb92 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: measured - Tonnes: 2000962 - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.05 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Measured resource for copper equivalent at Vermilion deposit, contributing to the overall MRE with high confidence. - Positive factor: High confidence Measured category. - Positive factor: Significant tonnage and contained copper equivalent. - Positive factor: Part of a maiden resource estimate. Evidence · table > 3.05 Context: 2,000,962 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **Cut-off 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-18) Sudbury Basin Project · copper #### Identity - Project: Sudbury Basin Project - Commodity: copper - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:625859beae8d14e4bfe0 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 1582181 - Grade: 1.56 - Grade Unit: % - Contained Metal: 24665 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for copper at Vermilion deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained copper. - Positive factor: Part of a maiden resource estimate. Evidence · table > 1.56 Context: 1,582,181 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-19) Sudbury Basin Project · zinc #### Identity - Project: Sudbury Basin Project - Commodity: zinc - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:625859beae8d14e4bfe0 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 1582181 - Grade: 4.4 - Grade Unit: % - Contained Metal: 69665 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for zinc at Vermilion deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained zinc. - Positive factor: Part of a maiden resource estimate. Evidence · table > 4.40 Context: 1,582,181 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-20) Sudbury Basin Project · lead #### Identity - Project: Sudbury Basin Project - Commodity: lead - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:625859beae8d14e4bfe0 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 1582181 - Grade: 1.11 - Grade Unit: % - Contained Metal: 17605 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for lead at Vermilion deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained lead. - Positive factor: Part of a maiden resource estimate. Evidence · table > 1.11 Context: 1,582,181 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-21) Sudbury Basin Project · gold #### Identity - Project: Sudbury Basin Project - Commodity: gold - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:625859beae8d14e4bfe0 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 1582181 - Grade: 0.91 - Grade Unit: g/t - Contained Metal: 46364 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for gold at Vermilion deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained gold. - Positive factor: Part of a maiden resource estimate. Evidence · table > 0.91 Context: 1,582,181 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-22) Sudbury Basin Project · silver #### Identity - Project: Sudbury Basin Project - Commodity: silver - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:625859beae8d14e4bfe0 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 1582181 - Grade: 54.05 - Grade Unit: g/t - Contained Metal: 2749567 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for silver at Vermilion deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained silver. - Positive factor: Part of a maiden resource estimate. Evidence · table > 54.05 Context: 1,582,181 #### 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 **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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-23) Sudbury Basin Project · copper\_equivalent #### Identity - Project: Sudbury Basin Project - Commodity: copper\_equivalent - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:625859beae8d14e4bfe0 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 1582181 - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Indicated resource for copper equivalent at Vermilion deposit, contributing to the overall MRE with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence. - Positive factor: Significant tonnage and contained copper equivalent. - Positive factor: Part of a maiden resource estimate. Evidence · table > 3.23 Context: 1,582,181 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-24) Sudbury Basin Project · copper #### Identity - Project: Sudbury Basin Project - Commodity: copper - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:e629dc5ca4244098c207 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 804289 - Grade: 1.24 - Grade Unit: % - Contained Metal: 10011 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.81 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for copper at Errington deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 1.24 Context: 804,289 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-25) Sudbury Basin Project · zinc #### Identity - Project: Sudbury Basin Project - Commodity: zinc - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:e629dc5ca4244098c207 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 804289 - Grade: 4.3 - Grade Unit: % - Contained Metal: 34614 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.81 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for zinc at Errington deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 4.30 Context: 804,289 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-26) Sudbury Basin Project · lead #### Identity - Project: Sudbury Basin Project - Commodity: lead - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:e629dc5ca4244098c207 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 804289 - Grade: 1.2 - Grade Unit: % - Contained Metal: 9646 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.81 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for lead at Errington deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 1.20 Context: 804,289 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-27) Sudbury Basin Project · gold #### Identity - Project: Sudbury Basin Project - Commodity: gold - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:e629dc5ca4244098c207 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 804289 - Grade: 0.79 - Grade Unit: g/t - Contained Metal: 20363 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.81 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for gold at Errington deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 0.79 Context: 804,289 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-28) Sudbury Basin Project · silver #### Identity - Project: Sudbury Basin Project - Commodity: silver - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:e629dc5ca4244098c207 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 804289 - Grade: 51.79 - Grade Unit: g/t - Contained Metal: 1339190 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.81 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for silver at Errington deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 51.79 Context: 804,289 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-29) Sudbury Basin Project · copper\_equivalent #### Identity - Project: Sudbury Basin Project - Commodity: copper\_equivalent - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:e629dc5ca4244098c207 - Deposit or zone: Errington - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 804289 - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.81 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for copper equivalent at Errington deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 2.81 Context: 804,289 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-30) Sudbury Basin Project · copper #### Identity - Project: Sudbury Basin Project - Commodity: copper - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:2a6e02735f72ba7c8182 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 357339 - Grade: 1.11 - Grade Unit: % - Contained Metal: 3975 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for copper at Vermilion deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 1.11 Context: 357,339 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-31) Sudbury Basin Project · zinc #### Identity - Project: Sudbury Basin Project - Commodity: zinc - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:2a6e02735f72ba7c8182 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 357339 - Grade: 4.92 - Grade Unit: % - Contained Metal: 17571 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for zinc at Vermilion deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 4.92 Context: 357,339 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-32) Sudbury Basin Project · lead #### Identity - Project: Sudbury Basin Project - Commodity: lead - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:2a6e02735f72ba7c8182 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 357339 - Grade: 1.24 - Grade Unit: % - Contained Metal: 4428 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for lead at Vermilion deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 1.24 Context: 357,339 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-33) Sudbury Basin Project · gold #### Identity - Project: Sudbury Basin Project - Commodity: gold - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:2a6e02735f72ba7c8182 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 357339 - Grade: 1.08 - Grade Unit: g/t - Contained Metal: 12400 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for gold at Vermilion deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 1.08 Context: 357,339 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-34) Sudbury Basin Project · silver #### Identity - Project: Sudbury Basin Project - Commodity: silver - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:2a6e02735f72ba7c8182 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 357339 - Grade: 58.15 - Grade Unit: g/t - Contained Metal: 668051 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for silver at Vermilion deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 58.15 Context: 357,339 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-35) Sudbury Basin Project · copper\_equivalent #### Identity - Project: Sudbury Basin Project - Commodity: copper\_equivalent - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:2a6e02735f72ba7c8182 - Deposit or zone: Vermilion - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 357339 - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for copper equivalent at Vermilion deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 3.00 Context: 357,339 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-36) Sudbury Basin Project · copper #### Identity - Project: Sudbury Basin Project - Commodity: copper - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:52ab66ca93110b0fa6de - Deposit or zone: Balfour - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 2274831 - Grade: 0.93 - Grade Unit: % - Contained Metal: 21126 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for copper at Balfour deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 0.93 Context: 2,274,831 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-37) Sudbury Basin Project · zinc #### Identity - Project: Sudbury Basin Project - Commodity: zinc - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:52ab66ca93110b0fa6de - Deposit or zone: Balfour - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 2274831 - Grade: 4.68 - Grade Unit: % - Contained Metal: 106548 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for zinc at Balfour deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 4.68 Context: 2,274,831 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-38) Sudbury Basin Project · lead #### Identity - Project: Sudbury Basin Project - Commodity: lead - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:52ab66ca93110b0fa6de - Deposit or zone: Balfour - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 2274831 - Grade: 1.99 - Grade Unit: % - Contained Metal: 45207 - Contained Unit: t - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for lead at Balfour deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 1.99 Context: 2,274,831 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-39) Sudbury Basin Project · gold #### Identity - Project: Sudbury Basin Project - Commodity: gold - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:52ab66ca93110b0fa6de - Deposit or zone: Balfour - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 2274831 - Grade: 0.41 - Grade Unit: g/t - Contained Metal: 29982 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for gold at Balfour deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 0.41 Context: 2,274,831 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-40) Sudbury Basin Project · silver #### Identity - Project: Sudbury Basin Project - Commodity: silver - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:52ab66ca93110b0fa6de - Deposit or zone: Balfour - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 2274831 - Grade: 73.08 - Grade Unit: g/t - Contained Metal: 5345239 - Contained Unit: oz - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for silver at Balfour deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 73.08 Context: 2,274,831 #### 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/errington-metals-announces-maiden-mineral-resource-estimate-for-the-sudbury-basi--38d79221-c9ea-4e57-9923-07fce64105f9#fact-resource-facts-41) Sudbury Basin Project · copper\_equivalent #### Identity - Project: Sudbury Basin Project - Commodity: copper\_equivalent - Region: canada\_on - Reported Region: Ontario - Ticker: EM.V #### Resource scope - Estimate type: resource - Effective date: 2026-09-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ryan Wilson, Ph.D., P. Geo. - Resource group id: resource:52ab66ca93110b0fa6de - Deposit or zone: Balfour - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 2274831 - Cutoff Grade: 1.5 - Cutoff Unit: % CuEq #### Prior Estimate - Resource Date: 2026-09-20 #### Metal Equivalent - Metal Eq. Grade: 2.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Canada, Activation Labs, MSALABS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred resource for copper equivalent at Balfour deposit, indicating potential for future growth but with lower confidence. - Positive factor: Newly recognized Inferred resources reflect high potential for additional mineralization. - Positive factor: Part of a maiden resource estimate. - Negative factor: Inferred category has lower confidence and cannot support economic studies alone. Evidence · table > 2.57 Context: 2,274,831 #### 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 **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 ## 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.