# Cosa Announces Largest Drill Program to Date at Murphy Lake North with Participation from Denison Mines

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411

Original source: https://money.tmx.com/en/quote/COSA/news/8714605009761761/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa

Publisher: tmx

Original announcement: 2026-05-28T12:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Cosa Resources Corp.

- Ticker: COSA

- Exchange: TSX

- Region: Saskatchewan

- Primary commodity: Uranium

- Secondary commodities: Nickel, Cobalt

- Document categories: Drill results

- Extracted: 2026-09-13 18:44:29 UTC

Narrative sentiment: 0.10 · Bullish

## Minestarters Atlas summary

Cosa Resources Corp. announced its largest drill program to date at the Murphy Lake North project, with Denison Mines Corp. participating in funding. The summer 2026 program will comprise 6,000 metres across 15 drill holes, following up on significant unconformity-related uranium mineralization intersected in winter 2026, including 0.5 metres at 1.70% U3O8, 6.01% Ni, and 2.50% Co. The mineralization remains open along strike, and the program aims to extend these zones.

Reasoning: Cosa Resources announced a significant planned drill program at Murphy Lake North, with funding participation from Denison Mines, to follow up on promising historical high-grade uranium, nickel, and cobalt mineralization. However, the detailed assay results provided in the release are from a previous winter program and are not new.

- Positive factor: Largest drill program to date planned

- Positive factor: Denison Mines' participation and funding

- Positive factor: Historical high-grade uranium intercepts with coincident nickel and cobalt

- Positive factor: Mineralization remains open along strike

- Positive factor: QA/QC disclosed for historical assays

- Negative factor: Assay results presented are historical, not new

- Negative factor: True width not stated for intercepts

- Negative factor: Some holes reported no significant mineralization

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 29

## Classification and evidence

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: The assay results presented in the table are explicitly noted as 'Assays previously released' and are from the winter 2026 program, while the document is published in May 2026, indicating they are not new information.

Evidence · text

> 4 - Assays previously released

**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: The release details QA/QC measures including the use of certified reference materials \(CRM\) blanks and standards, repeat analyses by SRC Geoanalytical Laboratories \(ISO/IEC 17025:2005 accredited\), and verification by Cosa staff and comparison with scintillometer readings.

Evidence · text

> Cosa inserts certified reference material \(CRM\) blanks and standards into the split core sample series as a QA/QC measure. SRC conducts a QA/QC programme which includes repeat analyses and insertion of CRM standards CAR218, BL4A, and BL2A. SRC's CRM results are verified by Cosa staff. U 3 O 8 assay results are compared to RS-125 hand held scintillometer readings and down hole gamma probe results to verify chemical assays and measured radioactivity align.

**Apparent Width Only**

Polarity: negative

Definition: Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.

Why it applies: The drill results table reports 'Length \(m\)' which represents downhole intercept length, but no true width or drill orientation relative to mineralization is provided for any of the intercepts.

Evidence · table

> Length \(m\)

Context: Hole ID

**Step-Out Extension**

Polarity: positive

Definition: Mineralization extended beyond the previously known limit.

Why it applies: The planned summer drilling program is explicitly stated to 'focus on step-out tests of the Cyclone mineralization' and 'progressive step outs along strike' to extend known mineralization.

Evidence · text

> drilling to focus on step-out tests of the Cyclone mineralization

**High Grade Intercept**

Polarity: positive

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The intercept of 0.5m at 1.70% U3O8 is a strong grade for uranium, approaching the exceptional threshold of 2% U3O8, despite its narrow width.

Evidence · table

> 1.70

Context: 310.5

## Extracted facts

Stored fact records: 29. Some facts used in scoring do not have a stored record.

## Drill Results (29)

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-0)

Murphy Lake North · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: uranium
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.02
- Grade Unit: %
- Intercept: 0.5 m
- From: 306.5 m
- To: 307 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:306.5-307
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a very low uranium grade over a narrow width, and the results are historical.

- Negative factor: Low grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.02

Context: 306.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-1)

Murphy Lake North · nickel

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.09
- Grade Unit: %
- Intercept: 0.5 m
- From: 306.5 m
- To: 307 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:306.5-307
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a very low nickel grade over a narrow width, and the results are historical.

- Negative factor: Very low grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.09

Context: 306.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-2)

Murphy Lake North · cobalt

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.02
- Grade Unit: %
- Intercept: 0.5 m
- From: 306.5 m
- To: 307 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:306.5-307
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a very low cobalt grade over a narrow width, and the results are historical.

- Negative factor: Very low grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.02

Context: 306.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-3)

Murphy Lake North · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: uranium
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.25
- Grade Unit: %
- Intercept: 0.5 m
- From: 307.5 m
- To: 308 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:307.5-308
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a moderate uranium grade over a very narrow width, and the results are historical.

- Positive factor: Moderate uranium grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.25

Context: 307.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-4)

Murphy Lake North · nickel

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.26
- Grade Unit: %
- Intercept: 0.5 m
- From: 307.5 m
- To: 308 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:307.5-308
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a low nickel grade over a very narrow width, and the results are historical.

- Negative factor: Low nickel grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.26

Context: 307.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-5)

Murphy Lake North · cobalt

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.04
- Grade Unit: %
- Intercept: 0.5 m
- From: 307.5 m
- To: 308 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:307.5-308
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a very low cobalt grade over a very narrow width, and the results are historical.

- Negative factor: Very low grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.04

Context: 307.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-6)

Murphy Lake North · uranium

Historical result

Needs review: historical\_restatement

#### 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: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:308.5-313.5
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a strong uranium grade over a moderate width, and the results are historical.

- Positive factor: Strong uranium grade

- Positive factor: Moderate intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.55

Context: 308.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-7)

Murphy Lake North · nickel

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 4.09
- Grade Unit: %
- Intercept: 5 m
- From: 308.5 m
- To: 313.5 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:308.5-313.5
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows an exceptional nickel grade over a moderate width, and the results are historical.

- Positive factor: Exceptional nickel grade

- Positive factor: Moderate intercept length

- Negative factor: Assays previously released

Evidence · table

> 4.09

Context: 308.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-8)

Murphy Lake North · cobalt

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 1.73
- Grade Unit: %
- Intercept: 5 m
- From: 308.5 m
- To: 313.5 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:308.5-313.5
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows an exceptional cobalt grade over a moderate width, and the results are historical.

- Positive factor: Exceptional cobalt grade

- Positive factor: Moderate intercept length

- Negative factor: Assays previously released

Evidence · table

> 1.73

Context: 308.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-9)

Murphy Lake North · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: uranium
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.95
- Grade Unit: %
- Intercept: 2.5 m
- From: 310.5 m
- To: 313 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:310.5-313
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This sub-interval shows a strong uranium grade over a moderate width, and the results are historical.

- Positive factor: Strong uranium grade

- Positive factor: Moderate intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.95

Context: 310.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-10)

Murphy Lake North · nickel

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 4.5
- Grade Unit: %
- Intercept: 2.5 m
- From: 310.5 m
- To: 313 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:310.5-313
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This sub-interval shows an exceptional nickel grade over a moderate width, and the results are historical.

- Positive factor: Exceptional nickel grade

- Positive factor: Moderate intercept length

- Negative factor: Assays previously released

Evidence · table

> 4.50

Context: 310.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-11)

Murphy Lake North · cobalt

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 2.29
- Grade Unit: %
- Intercept: 2.5 m
- From: 310.5 m
- To: 313 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:310.5-313
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This sub-interval shows an exceptional cobalt grade over a moderate width, and the results are historical.

- Positive factor: Exceptional cobalt grade

- Positive factor: Moderate intercept length

- Negative factor: Assays previously released

Evidence · table

> 2.29

Context: 310.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-12)

Murphy Lake North · uranium

Historical result

Needs review: historical\_restatement

#### 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: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:310.5-311
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This sub-interval shows a strong uranium grade over a very narrow width, and the results are historical.

- Positive factor: Strong uranium grade

- Positive factor: High grade intercept

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 1.70

Context: 310.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-13)

Murphy Lake North · nickel

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 6.01
- Grade Unit: %
- Intercept: 0.5 m
- From: 310.5 m
- To: 311 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:310.5-311
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This sub-interval shows an exceptional nickel grade over a very narrow width, and the results are historical.

- Positive factor: Exceptional nickel grade

- Positive factor: High grade intercept

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 6.01

Context: 310.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-013

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-14)

Murphy Lake North · cobalt

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-013
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 2.5
- Grade Unit: %
- Intercept: 0.5 m
- From: 310.5 m
- To: 311 m
- Intercept Depth: 306.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-013:310.5-311
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 166 °
- Dip: -60 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This sub-interval shows an exceptional cobalt grade over a very narrow width, and the results are historical.

- Positive factor: Exceptional cobalt grade

- Positive factor: High grade intercept

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 2.50

Context: 310.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-014

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-15)

Murphy Lake North · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-014
- Project: Murphy Lake North
- Commodity: uranium
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.04
- Grade Unit: %
- Intercept: 0.5 m
- From: 278.3 m
- To: 278.8 m
- Intercept Depth: 278.3 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-014:278.3-278.8
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 170 °
- Dip: -75 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a low uranium grade over a very narrow width, and the results are historical.

- Negative factor: Low grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.04

Context: 278.3

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-014

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-16)

Murphy Lake North · nickel

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-014
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.09
- Grade Unit: %
- Intercept: 0.5 m
- From: 278.3 m
- To: 278.8 m
- Intercept Depth: 278.3 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-014:278.3-278.8
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 170 °
- Dip: -75 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a very low nickel grade over a very narrow width, and the results are historical.

- Negative factor: Very low grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.09

Context: 278.3

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-014

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-17)

Murphy Lake North · cobalt

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-014
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.04
- Grade Unit: %
- Intercept: 0.5 m
- From: 278.3 m
- To: 278.8 m
- Intercept Depth: 278.3 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-014:278.3-278.8
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 170 °
- Dip: -75 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a very low cobalt grade over a very narrow width, and the results are historical.

- Negative factor: Very low grade

- Negative factor: Very narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.04

Context: 278.3

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-016

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-18)

Murphy Lake North · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-016
- Project: Murphy Lake North
- Commodity: uranium
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.04
- Grade Unit: %
- Intercept: 1 m
- From: 286.5 m
- To: 287.5 m
- Intercept Depth: 286.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-016:286.5-287.5
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 165 °
- Dip: -65 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a low uranium grade over a narrow width, and the results are historical.

- Negative factor: Low grade

- Negative factor: Narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.04

Context: 286.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-016

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-19)

Murphy Lake North · nickel

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-016
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.07
- Grade Unit: %
- Intercept: 1 m
- From: 286.5 m
- To: 287.5 m
- Intercept Depth: 286.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-016:286.5-287.5
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 165 °
- Dip: -65 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a very low nickel grade over a narrow width, and the results are historical.

- Negative factor: Very low grade

- Negative factor: Narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.07

Context: 286.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### MLN26-016

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-20)

Murphy Lake North · cobalt

Historical result

Needs review: historical\_restatement

#### Identity

- Hole ID: MLN26-016
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.04
- Grade Unit: %
- Intercept: 1 m
- From: 286.5 m
- To: 287.5 m
- Intercept Depth: 286.5 m

#### Classification

- Deposit Type: other
- Program: exploration
- Sample Type: drill
- Group ID: MLN26-016:286.5-287.5
- Mining Method: underground

#### Location

- Location: Section 3200E
- Azimuth: 165 °
- Dip: -65 °
- Loc. Confidence: high
- Loc. Source: document

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- QA/QC Disclosed: Yes
- Lab Certified: Yes
- QP Signed: Yes
- QA/QC Methods: standards, blanks

#### Deleterious

- Deleterious Flag: No

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes

#### Dates

- Event date: 2026-05-28T00:00:00.000Z

Reasoning: This intercept shows a very low cobalt grade over a narrow width, and the results are historical.

- Negative factor: Very low grade

- Negative factor: Narrow intercept length

- Negative factor: Assays previously released

Evidence · table

> 0.04

Context: 286.5

#### 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

**Stale Data Re-release**

Polarity: negative

Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty.

Why it applies: the fact restates a prior release

### and

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-21)

Murphy Lake North · nickel

#### Identity

- Hole ID: and
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.26
- Grade Unit: %
- Intercept: 0.5 m
- From: 307.5 m
- To: 308 m
- Intercept Depth: 307.5 m

#### Classification

- Deposit Type: other
- Sample Type: drill
- Group ID: and:307.5-308
- Mining Method: underground

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- 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: 2026-05-28T00:00:00.000Z

Reasoning: Expanded from assay table. 0.26 % nickel is below against the default band \[3, 1.5, 0.8, 0.3\] %.

- Negative factor: 0.26 % nickel is below the weak threshold \(0.3 %\) on the default band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.26

Context: and

#### 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

### and

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-22)

Murphy Lake North · cobalt

#### Identity

- Hole ID: and
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 0.04
- Grade Unit: %
- Intercept: 0.5 m
- From: 307.5 m
- To: 308 m
- Intercept Depth: 307.5 m

#### Classification

- Deposit Type: other
- Sample Type: drill
- Group ID: and:307.5-308
- Mining Method: underground

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- 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: 2026-05-28T00:00:00.000Z

Reasoning: Expanded from assay table. 0.04 % cobalt is below against the default band \[0.5, 0.3, 0.15, 0.08\] %.

- Negative factor: 0.04 % cobalt is below the weak threshold \(0.08 %\) on the default band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 0.04

Context: and

#### 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

### and

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-23)

Murphy Lake North · nickel

#### Identity

- Hole ID: and
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 4.09
- Grade Unit: %
- Intercept: 5 m
- From: 308.5 m
- To: 313.5 m
- Intercept Depth: 308.5 m

#### Classification

- Deposit Type: other
- Sample Type: drill
- Group ID: and:308.5-313.5
- Mining Method: underground

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- 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: 2026-05-28T00:00:00.000Z

Reasoning: Expanded from assay table. 4.09 % nickel is exceptional against the default band \[3, 1.5, 0.8, 0.3\] %.

- Positive factor: 4.09 % nickel is exceptional on the default band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 4.09

Context: and

#### 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

### and

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-24)

Murphy Lake North · cobalt

#### Identity

- Hole ID: and
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 1.73
- Grade Unit: %
- Intercept: 5 m
- From: 308.5 m
- To: 313.5 m
- Intercept Depth: 308.5 m

#### Classification

- Deposit Type: other
- Sample Type: drill
- Group ID: and:308.5-313.5
- Mining Method: underground

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- 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: 2026-05-28T00:00:00.000Z

Reasoning: Expanded from assay table. 1.73 % cobalt is exceptional against the default band \[0.5, 0.3, 0.15, 0.08\] %.

- Positive factor: 1.73 % cobalt is exceptional on the default band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 1.73

Context: and

#### 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

### incl.

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-25)

Murphy Lake North · nickel

#### Identity

- Hole ID: incl.
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 4.5
- Grade Unit: %
- Intercept: 2.5 m
- From: 310.5 m
- To: 313 m
- Intercept Depth: 310.5 m

#### Classification

- Deposit Type: other
- Sample Type: drill
- Group ID: incl.:310.5-313
- Mining Method: underground

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- 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: 2026-05-28T00:00:00.000Z

Reasoning: Expanded from assay table. 4.5 % nickel is exceptional against the default band \[3, 1.5, 0.8, 0.3\] %.

- Positive factor: 4.5 % nickel is exceptional on the default band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 4.50

Context: incl.

#### 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

### incl.

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-26)

Murphy Lake North · cobalt

#### Identity

- Hole ID: incl.
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 2.29
- Grade Unit: %
- Intercept: 2.5 m
- From: 310.5 m
- To: 313 m
- Intercept Depth: 310.5 m

#### Classification

- Deposit Type: other
- Sample Type: drill
- Group ID: incl.:310.5-313
- Mining Method: underground

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- 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: 2026-05-28T00:00:00.000Z

Reasoning: Expanded from assay table. 2.29 % cobalt is exceptional against the default band \[0.5, 0.3, 0.15, 0.08\] %.

- Positive factor: 2.29 % cobalt is exceptional on the default band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 2.29

Context: incl.

#### 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

### incl.

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-27)

Murphy Lake North · nickel

#### Identity

- Hole ID: incl.
- Project: Murphy Lake North
- Commodity: nickel
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 6.01
- Grade Unit: %
- Intercept: 0.5 m
- From: 310.5 m
- To: 311 m
- Intercept Depth: 310.5 m

#### Classification

- Deposit Type: other
- Sample Type: drill
- Group ID: incl.:310.5-311
- Mining Method: underground

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- 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: 2026-05-28T00:00:00.000Z

Reasoning: Expanded from assay table. 6.01 % nickel is exceptional against the default band \[3, 1.5, 0.8, 0.3\] %.

- Positive factor: 6.01 % nickel is exceptional on the default band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 6.01

Context: incl.

#### 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

### incl.

[Link to this fact](https://atlas-extractions.minestarters.com/news/cosa-announces-largest-drill-program-to-date-at-murphy-lake-north-with-participa--985aa175-165a-4456-9c9e-8b9b2d217411#fact-drill-facts-28)

Murphy Lake North · cobalt

#### Identity

- Hole ID: incl.
- Project: Murphy Lake North
- Commodity: cobalt
- Region: canada\_sk
- Reported Region: canada\_sk
- Ticker: COSA

#### Geometry

- Grade: 2.5
- Grade Unit: %
- Intercept: 0.5 m
- From: 310.5 m
- To: 311 m
- Intercept Depth: 310.5 m

#### Classification

- Deposit Type: other
- Sample Type: drill
- Group ID: incl.:310.5-311
- Mining Method: underground

#### QA/QC

- Laboratory: SRC Geoanalytical Laboratories
- 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: 2026-05-28T00:00:00.000Z

Reasoning: Expanded from assay table. 2.5 % cobalt is exceptional against the default band \[0.5, 0.3, 0.15, 0.08\] %.

- Positive factor: 2.5 % cobalt is exceptional on the default band.

- Negative factor: Scored from rubric bands during table expansion, not from document context.

Evidence · table

> 2.50

Context: incl.

#### 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.