# Cosa Announces Summer Drilling Results for Murphy Lake North Uranium Joint Venture with Denison Mines Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96 Original source: https://orestocks.com/company/DML.TO/press-releases/8563028022242076 Publisher: orestocks Original announcement: 2026-09-14T12:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Cosa Resources Corp. - Ticker: COSA - Exchange: Unavailable - Region: Saskatchewan - Primary commodity: Uranium - Secondary commodities: Nickel, Cobalt - Document categories: Drill results - Extracted: 2026-09-14 12:54:20 UTC Narrative sentiment: 0.40 · Bullish ## Minestarters Atlas summary Cosa Resources reported summer 2026 drilling results at the Murphy Lake North project, where 13 holes intersected structural alteration and elevated radioactivity. Notable results include a 5.0m interval at 0.55% U3O8 in hole MLN26-013, and the program successfully identified key structural features like the N- and S-faults. Reasoning: Summer drilling confirmed structural continuity and elevated radioactivity across a 650m strike length, though specific high-grade unconformity targets were not all hit. - Positive factor: significant room for basement-hosted mineralization remaining - Positive factor: all 13 drill holes intersected strong structure and/or alteration - Positive factor: high-grade sub-interval of 1.70% U3O8 reported - Positive factor: QA/QC protocols disclosed including certified lab and CRM usage - Negative factor: some holes undershot the target at the S-fault Facts used in scoring: 9 ## Classification and evidence **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: Release mentions SRC Geoanalytical Laboratories, use of CRM blanks and standards, and verification of assays against handheld spectrometer readings. Evidence · text > Cosa inserts certified reference material \(CRM\) blanks and standards into the split core sample series as a QA/QC measure. **Step-Out Extension** Polarity: positive Definition: Mineralization extended beyond the previously known limit. Why it applies: Drilling at Cyclone confirmed mineralization is contained within a much larger zone than previously recognized and remains open along strike. Evidence · text > mineralization intersected during the winter drill program is contained within a much larger zone of structure and alteration than previously recognized ## Extracted facts Stored fact records: 9. Some facts used in scoring do not have a stored record. ## Drill Results (9) ### MLN26-013 [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-0) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-013 - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Grade: 0.55 - Grade Unit: % - Intercept: 5 m - From: 308.5 m - To: 313.5 m - Intercept Depth: 308.5 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-013:308.5-313.5 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: 5.0m at 0.55% U3O8 is a solid intercept for the Cyclone trend. - Positive factor: strong grade for uranium exploration Evidence · text > 5.0 metres averaging 0.55% U3O8\(308.5-313.5 metres\) in MLN26-013 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### MLN26-013 [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-1) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-013 - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Grade: 1.7 - Grade Unit: % - Intercept: 0.5 m - From: 310.5 m - To: 311 m - Intercept Depth: 310.5 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-013:310.5-311 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: 1.70% U3O8 is a high-grade sub-interval within the main intercept. - Positive factor: high-grade sub-interval Evidence · text > including a 0.5 metre subinterval of 1.70% U3O8\(310.5-311.0 metres\) #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### MLN26-018A [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-2) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-018A - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Intercept: 0.2 m - From: 351 m - To: 351.2 m - Intercept Depth: 351 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-018A:351-351.2 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: Low radioactivity \(315 CPS\) in a very narrow 0.2m interval. - Positive factor: radioactivity detected Evidence · table No evidence quote provided. Context: 351.0 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### MLN26-024 [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-3) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-024 - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Intercept: 0.1 m - From: 327.4 m - To: 327.5 m - Intercept Depth: 327.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-024:327.4-327.5 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: Very narrow 0.1m interval with 250 CPS radioactivity. - Positive factor: radioactivity detected Evidence · table No evidence quote provided. Context: 327.4 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### MLN26-026 [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-4) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-026 - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Intercept: 0.5 m - From: 336.5 m - To: 337 m - Intercept Depth: 336.5 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-026:336.5-337 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: 0.5m interval with 340 CPS radioactivity. - Positive factor: radioactivity detected Evidence · table No evidence quote provided. Context: 336.5 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### MLN26-026 [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-5) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-026 - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Intercept: 0.4 m - From: 379.2 m - To: 379.6 m - Intercept Depth: 379.2 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-026:379.2-379.6 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: 0.4m interval with 340 CPS radioactivity. - Positive factor: radioactivity detected Evidence · table No evidence quote provided. Context: 379.2 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### MLN26-027 [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-6) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-027 - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Intercept: 0.1 m - From: 348.2 m - To: 348.3 m - Intercept Depth: 348.2 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-027:348.2-348.3 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: Very narrow 0.1m interval with 320 CPS radioactivity. - Positive factor: radioactivity detected Evidence · table No evidence quote provided. Context: 348.2 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### MLN26-029 [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-7) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-029 - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Intercept: 0.1 m - From: 360.9 m - To: 361 m - Intercept Depth: 360.9 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-029:360.9-361 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: Very narrow 0.1m interval with 275 CPS radioactivity. - Positive factor: radioactivity detected Evidence · table No evidence quote provided. Context: 360.9 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### MLN26-030 [Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-summer-drilling-results-for-murphy-lake-north-uranium-joint-ventu--598e6a59-ea36-437c-9518-4a80db4fec96#fact-drill-facts-8) Murphy Lake North · uranium #### Identity - Hole ID: MLN26-030 - Project: Murphy Lake North - Commodity: uranium - Region: canada\_sk - Reported Region: canada\_sk - Ticker: COSA #### Geometry - Intercept: 0.3 m - From: 348.7 m - To: 349 m - Intercept Depth: 348.7 m #### Classification - Program: exploration - Sample Type: drill - Group ID: MLN26-030:348.7-349 #### QA/QC - Laboratory: SRC Geoanalytical Laboratories \(SRC\) - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-14T00:00:00.000Z Reasoning: 0.3m interval with 300 CPS radioactivity. - Positive factor: radioactivity detected Evidence · table No evidence quote provided. Context: 348.7 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ## 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.