# With Step-Out Drilling Continuing, Radisson Demonstrates Meaningful Resource Growth at O'Brien with an Updated Mineral Resource Estimate Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/with-step-out-drilling-continuing-radisson-demonstrates-meaningful-resource-grow--dd11438b-8568-4713-9881-1ac1ff8f1841 Original source: https://money.tmx.com/en/quote/RDS/news/6366371186948655/with-step-out-drilling-continuing-radisson-demonstrates-meaningful-resource-grow Publisher: tmx Original announcement: 2026-03-02T11:30:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Radisson Mining Resources Inc. - Ticker: RDS - Exchange: TSX - Region: Québec - Primary commodity: Gold - Secondary commodities: None reported - Document categories: Resource update - Extracted: 2026-09-16 18:54:04 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Radisson Mining Resources has released an updated Mineral Resource Estimate for the O'Brien Gold Project, showing significant growth in Inferred resources \(82% increase\) due to successful step-out drilling. While Indicated resource tonnage grew by 58%, the average grade decreased by 32% due to a refined capping strategy and lower cut-off grade. Reasoning: The update demonstrates substantial resource expansion, particularly in the Inferred category, driven by successful step-out drilling, though the Indicated grade has been lowered by the new capping and cut-off parameters. - Positive factor: Significant Inferred resource growth \(82%\) from step-out drilling - Positive factor: Indicated resource tonnage increase \(58%\) - Positive factor: High-grade vein deposit profile \(5.59 g/t Au Indicated\) - Positive factor: Clear expansion potential via ongoing 140ktm drill program - Negative factor: Grade decline in Indicated category \(32%\) due to lower cut-off and capping strategy Facts used in scoring: 2 ## Classification and evidence **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: A significant portion of the resource \(10.37 Mt\) is classified as Inferred. Evidence · text > Inferred Mineral Resources... 1.69 Moz \(10.37 Mt at 5.08 g/t Au\) **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: The estimate includes a substantial Indicated component of 3.49 Mt. Evidence · text > Indicated Mineral Resources... 0.63 Moz \(3.49 Mt at 5.59 g/t Au\) **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The document reports an updated Mineral Resource Estimate compared to previous versions. Evidence · text > demonstrates meaningful resource growth at O'Brien with an updated Mineral Resource Estimate **Tonnage Growth** Polarity: positive Definition: Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved. Why it applies: Indicated tonnage increased by 58% and Inferred by 55% vs prior estimates. Evidence · text > increase in tonnes of 58% to 3.49 Mt... increase in tonnage of 55% to 10.37 Mt **Grade Decline** Polarity: negative Definition: Average grade fell below the red-flag bound vs prior estimate — deposit economics worsening. May indicate high-grading in early drilling. Why it applies: Indicated grade fell by 32% compared to the May 2025 estimate. Evidence · text > decrease in grade of 32% to 5.59 g/t Au **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: Qualified Persons \(Richard Nieminen and Luke Evans\) are named and responsible for the MRE. Evidence · text > prepared under the supervision of Mr. Richard Nieminen, P.Geo., \(QC\)... Mr. Luke Evans, M.Sc., P.Eng., ing., of SLR Consulting \(Canada\) Ltd., is the Qualified Person responsible **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: The cut-off grade of 2.2 g/t Au is explicitly stated. Evidence · text > Mineral resources are reported above a cut-off grade of 2.2 g/t Au ## Extracted facts Stored fact records: 2. Some facts used in scoring do not have a stored record. ## Resource Estimates (2) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/with-step-out-drilling-continuing-radisson-demonstrates-meaningful-resource-grow--dd11438b-8568-4713-9881-1ac1ff8f1841#fact-resource-facts-0) O'Brien Gold Project · gold #### Identity - Project: O'Brien Gold Project - Commodity: gold - Region: canada\_qc - Reported Region: Québec - Ticker: RDS #### Resource scope - Estimate type: resource - Effective date: 2026-01-31T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Richard Nieminen, Luke Evans - Resource group id: resource:1d4633f15b6440178170 - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 3493000 - Grade: 5.59 - Grade Unit: g/t - Contained Metal: 628 - Contained Unit: koz au - Cutoff Grade: 2.2 - Cutoff Unit: g/t Au #### Prior Estimate - Resource Date: 2026-01-31 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated resource shows strong tonnage growth but lower grade due to updated estimation parameters. - Positive factor: Significant tonnage increase - Negative factor: Grade decline vs prior estimate Evidence · table > 5.59 Context: 3,493 #### 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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/with-step-out-drilling-continuing-radisson-demonstrates-meaningful-resource-grow--dd11438b-8568-4713-9881-1ac1ff8f1841#fact-resource-facts-1) O'Brien Gold Project · gold #### Identity - Project: O'Brien Gold Project - Commodity: gold - Region: canada\_qc - Reported Region: Québec - Ticker: RDS #### Resource scope - Estimate type: resource - Effective date: 2026-01-31T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Richard Nieminen, Luke Evans - Resource group id: resource:b6728084b9ed457c2a62 - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 10368000 - Grade: 5.08 - Grade Unit: g/t - Contained Metal: 1692 - Contained Unit: koz au - Cutoff Grade: 2.2 - Cutoff Unit: g/t Au #### Prior Estimate - Resource Date: 2026-01-31 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred resource shows exceptional growth in both tonnage and contained metal, validating the step-out drilling program. - Positive factor: Massive tonnage and metal growth - Positive factor: Successful step-out drilling Evidence · table > 5.08 Context: 10,368 #### 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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.