# North Shore Intersects Significant Uranium Mineralization in All Phase 1 Drill Holes at Rio Puerco

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38

Original source: https://www.accessnewswire.com/newsroom/en/metals-and-mining/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-ho-1216143

Publisher: accesswire

Original announcement: 2026-09-03T11:16:25.398Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: North Shore Uranium Ltd.

- Ticker: NSU

- Exchange: Unavailable

- Region: New Mexico

- Primary commodity: Uranium

- Secondary commodities: None reported

- Document categories: Drill results, Resource update

- Extracted: 2026-09-03 11:19:32 UTC

Narrative sentiment: 0.80 · Bullish

## Minestarters Atlas summary

North Shore Uranium Ltd. announced positive Phase 1 drill results from its Rio Puerco uranium project in New Mexico, intersecting significant uranium mineralization in all 13 holes. The program confirmed historical data with strong grades, including 12.5 ft at 0.331% eU3O8, and identified characteristics favorable for in-situ-recovery \(ISR\) mining. The company plans a Phase 2 drill program in Q4 2026 to advance towards a new NI 43-101 compliant resource estimate.

Reasoning: North Shore Uranium reported positive Phase 1 drill results from its Rio Puerco project, confirming significant uranium mineralization in all holes and validating historical data. The results, including strong grades and widths, are favorable for ISR mining and support the company's path towards a NI 43-101 compliant resource. While the grades are eU3O8, the detailed QA/QC and QP sign-off provide high confidence.

- Positive factor: Significant uranium mineralization intersected in all 13 Phase 1 drill holes.

- Positive factor: Grades up to 0.331% eU3O8 are strong for uranium deposits.

- Positive factor: All intercepts are below the water table, favorable for In-Situ Recovery \(ISR\) mining.

- Positive factor: Drilling confirmed mineralization in three separate sandstone units, validating historical data.

- Positive factor: Company plans Phase 2 drilling to advance towards a NI 43-101 compliant resource.

- Negative factor: Grades are equivalent uranium \(eU3O8\) from gamma logging, not chemical assays.

- Negative factor: Historical resource is not NI 43-101 compliant and not verified by a Qualified Person.

Facts used in scoring: 22

## Classification and evidence

**True Width Disclosed**

Polarity: positive

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: The document explicitly states: 'All intersections are assumed to be true widths given the vertical holes and the interpreted horizontal sandstone layers hosting the mineralization.'

Evidence · text

> All intersections are assumed to be true widths given the vertical holes and the interpreted horizontal sandstone layers hosting the mineralization.

**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 the use of a calibrated multi-parameter logging tool by Century Geophysical Corporation, including specific correction factors \(dead-time, K-factor, borehole diameter, fluid corrections\) and QP sign-off.

Evidence · text

> Upon completion of each drill hole, a downhole geophysical survey was completed by Century Geophysical Corporation \(" Century "\) using a calibrated multi-parameter logging tool. Natural gamma ray, resistivity and spontaneous potential measurements were taken at 0.1 foot intervals over the entire length of the drill hole. Downhole deviation measurements were also taken at 20 foot intervals. The natural gamma ray data was used for eU 3 O 8 estimation and resistivity provides information for geologic interpretation and correlation of the different sedimentary layers. Logging speeds were optimized to collect high-quality natural gamma data. eU 3 O 8 values are equivalent uranium grades derived from calibrated downhole gamma logging and the results presented in this news release have not been verified by chemical assays. Actual uranium grades may vary from the eU 3 O 8 grade estimation. The geophysical logging tool used by Century was calibrated at a calibration facility in Casper, Wyoming immediately prior to commencement of the drilling program. The eU 3 O 8 was estimated from the natural gamma ray data through application of standard correction and calibration factors, including dead-time correction, K-factor, borehole diameter and borehole fluid corrections.

**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 document clearly states the cut-off grade used for reporting intercepts: 'cutoff of 0.02% eU3O8 and a minimum grade x thickness of 0.30'.

Evidence · text

> Significant uranium mineralization was intersected in all 13 drill holes using a cutoff of 0.02% eU 3 0 8 and a minimum grade x thickness of 0.30

**Infill Drilling**

Polarity: neutral

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: The drill program is described as 'twin' drilling to validate and further evaluate historical exploration data from Kerr-McGee, which is characteristic of infill or confirmation drilling.

Evidence · text

> Each of the sites selected for drilling in 2026 is a "twin" of a mud rotary hole drilled by Kerr-McGee where uranium mineralization was identified using natural gamma ray logging.

**Historical Estimate Only**

Polarity: negative

Definition: Estimate pre-dates or does not comply with current JORC/NI 43-101 standards — requires verification drilling.

Why it applies: The document explicitly refers to a 'Historical Resource' from 2009 that 'has not been verified and should not be relied upon' and 'does not comply with Canadian National Instrument 43-101 guidelines'.

Evidence · text

> A historical resource estimate of 6.0 million tonnes at an average grade of 0.09% eU 3 O 8 for 11.4 million pounds of U 3 O 8 was reported for Rio Puerco in 2009 by Monaro Mining NL \(the " Historical Resource "\).

**No QP/CP Disclosure**

Polarity: negative

Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.

Why it applies: The document states that 'A Qualified Person has not verified the Historical Resource estimate on behalf of the Company.'

Evidence · text

> A Qualified Person has not verified the Historical Resource estimate on behalf of the Company.

**Inferred Resource**

Polarity: negative

Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: The historical resource estimate is reported as an 'inferred resource' under JORC Code \(2004\).

Evidence · text

> Monaro reported a JORC Code \(2004\)-compliant inferred resource of 6.0 million tonnes at an average grade of 0.09% eU 3 O 8 using a cutoff grade of 0.03% eU 3 O 8 for 11.4 million pounds of contained U 3 O 8 which is classified by the Company as a Historical Resource.

## Extracted facts

Stored fact records: 22. Some facts used in scoring do not have a stored record.

## Drill Results (22)

### RP-26-18-25

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-0)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-25
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.132
- Grade Unit: % U3O8
- Intercept: 3.9624 m
- True Width: 3.9624 m
- From: 178.308 m
- To: 182.2704 m
- Hole Depth: 215.9508 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows moderate uranium mineralization, contributing positively to the overall program success and validation of historical data, with good confidence in the reported width.

- Positive factor: Moderate grade \(0.132% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.132

Context: 13.0

### RP-26-18-25

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-1)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-25
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.091
- Grade Unit: % U3O8
- Intercept: 2.286 m
- True Width: 2.286 m
- From: 183.7944 m
- To: 186.0288 m
- Hole Depth: 215.9508 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak to moderate uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak to moderate grade \(0.091% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.091

Context: 7.5

### RP-26-18-32

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-2)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-32
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.06
- Grade Unit: % U3O8
- Intercept: 3.5052 m
- True Width: 3.5052 m
- From: 168.25 m
- To: 171.7548 m
- Hole Depth: 209.94984 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.060% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.060

Context: 11.5

### RP-26-18-32

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-3)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-32
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.053
- Grade Unit: % U3O8
- Intercept: 3.2004 m
- True Width: 3.2004 m
- From: 175.5648 m
- To: 178.7976 m
- Hole Depth: 209.94984 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.053% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.053

Context: 10.5

### RP-26-18-39

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-4)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-39
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.295
- Grade Unit: % U3O8
- Intercept: 8.2296 m
- True Width: 8.2296 m
- From: 200.46936 m
- To: 208.63896 m
- Hole Depth: 229.45744 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This is a strong intercept with good grade and width, highlighted by the company as a key result, contributing significantly to the positive outlook for the project.

- Positive factor: Strong grade \(0.295% eU3O8\) for uranium.

- Positive factor: Significant intercept length \(8.23 m\).

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.295

Context: 27.0

### RP-26-18-96

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-5)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-96
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.097
- Grade Unit: % U3O8
- Intercept: 3.3528 m
- True Width: 3.3528 m
- From: 200.5584 m
- To: 203.9112 m
- Hole Depth: 233.9916 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak to moderate uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak to moderate grade \(0.097% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.097

Context: 11.0

### RP-26-18-233

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-6)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-233
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.17
- Grade Unit: % U3O8
- Intercept: 2.1336 m
- True Width: 2.1336 m
- From: 208.88904 m
- To: 211.01304 m
- Hole Depth: 221.95896 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows moderate uranium mineralization, contributing positively to the overall program success and validation of historical data, with good confidence in the reported width.

- Positive factor: Moderate grade \(0.170% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.170

Context: 7.0

### RP-26-18-408

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-7)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-408
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.082
- Grade Unit: % U3O8
- Intercept: 2.7432 m
- True Width: 2.7432 m
- From: 157.4916 m
- To: 160.1196 m
- Hole Depth: 197.99352 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak to moderate uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak to moderate grade \(0.082% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.082

Context: 9.0

### RP-26-18-467

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-8)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-467
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.109
- Grade Unit: % U3O8
- Intercept: 1.524 m
- True Width: 1.524 m
- From: 149.87736 m
- To: 151.40736 m
- Hole Depth: 200.95944 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows moderate uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Moderate grade \(0.109% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.109

Context: 5.0

### RP-26-18-467

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-9)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-467
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.046
- Grade Unit: % U3O8
- Intercept: 1.9812 m
- True Width: 1.9812 m
- From: 165.17616 m
- To: 167.63736 m
- Hole Depth: 200.95944 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.046% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.046

Context: 6.5

### RP-26-18-467

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-10)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-467
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.046
- Grade Unit: % U3O8
- Intercept: 7.1628 m
- True Width: 7.1628 m
- From: 175.77816 m
- To: 182.94096 m
- Hole Depth: 200.95944 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization over a reasonable width, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.046% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.046

Context: 23.5

### RP-26-18-510

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-11)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-510
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.112
- Grade Unit: % U3O8
- Intercept: 3.2004 m
- True Width: 3.2004 m
- From: 157.4916 m
- To: 160.62336 m
- Hole Depth: 221.95896 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows moderate uranium mineralization, contributing positively to the overall program success and validation of historical data, with good confidence in the reported width.

- Positive factor: Moderate grade \(0.112% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.112

Context: 10.5

### RP-26-18-510

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-12)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-510
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.086
- Grade Unit: % U3O8
- Intercept: 1.9812 m
- True Width: 1.9812 m
- From: 173.39856 m
- To: 175.32936 m
- Hole Depth: 221.95896 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak to moderate uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak to moderate grade \(0.086% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.086

Context: 6.5

### RP-26-18-512

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-13)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-512
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.09
- Grade Unit: % U3O8
- Intercept: 3.9624 m
- True Width: 3.9624 m
- From: 173.4312 m
- To: 177.3936 m
- Hole Depth: 227.93664 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak to moderate uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak to moderate grade \(0.090% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.090

Context: 13.0

### RP-26-18-512

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-14)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-512
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.027
- Grade Unit: % U3O8
- Intercept: 8.382 m
- True Width: 8.382 m
- From: 178.308 m
- To: 186.69 m
- Hole Depth: 227.93664 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.027% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.027

Context: 27.5

### RP-26-18-613

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-15)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-613
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.109
- Grade Unit: % U3O8
- Intercept: 1.3716 m
- True Width: 1.3716 m
- From: 187.66776 m
- To: 189.03456 m
- Hole Depth: 203.94968 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows moderate uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Moderate grade \(0.109% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.109

Context: 4.5

### RP-26-18-613

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-16)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-613
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.057
- Grade Unit: % U3O8
- Intercept: 2.4384 m
- True Width: 2.4384 m
- From: 190.10616 m
- To: 192.54936 m
- Hole Depth: 203.94968 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.057% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.057

Context: 8.0

### RP-26-18-640

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-17)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-640
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.057
- Grade Unit: % U3O8
- Intercept: 4.2672 m
- True Width: 4.2672 m
- From: 166.08792 m
- To: 170.35872 m
- Hole Depth: 200.95944 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.057% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.057

Context: 14.0

### RP-26-18-640

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-18)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-640
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.331
- Grade Unit: % U3O8
- Intercept: 3.81 m
- True Width: 3.81 m
- From: 181.63392 m
- To: 185.4432 m
- Hole Depth: 200.95944 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This is a strong intercept with good grade and width, highlighted by the company as a key result, contributing significantly to the positive outlook for the project.

- Positive factor: Strong grade \(0.331% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.331

Context: 12.5

### RP-26-18-691

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-19)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-691
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.072
- Grade Unit: % U3O8
- Intercept: 4.8768 m
- True Width: 4.8768 m
- From: 221.89464 m
- To: 226.71024 m
- Hole Depth: 247.43904 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.072% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.072

Context: 16.0

### RP-26-18-804

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-20)

Rio Puerco · uranium

#### Identity

- Hole ID: RP-26-18-804
- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.042
- Grade Unit: % U3O8
- Intercept: 3.2004 m
- True Width: 3.2004 m
- From: 187.20336 m
- To: 190.33512 m
- Hole Depth: 215.9508 m

#### Classification

- Program: exploration
- Sample Type: drill
- Mining Method: underground

#### Location

- Loc. Confidence: medium

#### QA/QC

- QA/QC Disclosed: Yes
- Lab Certified: No
- QP Signed: Yes
- QA/QC Methods: downhole gamma logging, resistivity logging, deviation measurements, dead-time correction, K-factor correction, borehole diameter correction, borehole fluid corrections

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: % U3O8

#### Review

- Needs Review: No
- Interp. Status: scored
- Historical: No

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This intercept shows weak uranium mineralization, contributing to the overall understanding of the deposit, with good confidence in the reported width.

- Positive factor: Weak grade \(0.042% eU3O8\) for uranium.

- Positive factor: True width assumed due to vertical holes and horizontal mineralization.

- Negative factor: Grade is equivalent uranium \(eU3O8\) from gamma logging, not chemical assay.

Evidence · table

> 0.042

Context: 10.5

### Fact 22

[Link to this fact](https://atlas-staging.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--97917bff-3dd1-4047-8375-d0656d196b38#fact-drill-facts-21)

Rio Puerco · uranium

Historical result

Needs review: historical\_restatement

#### Identity

- Project: Rio Puerco
- Commodity: uranium
- Region: mexico
- Reported Region: New Mexico
- Ticker: NSU

#### Geometry

- Grade: 0.09
- Grade Unit: % U3O8

#### Compositing

- Cutoff Grade: 0.03
- Cutoff Unit: % U3O8

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- Interp. Status: scored
- Historical: Yes
- Historical Source Date: 2009-01-01T00:00:00.000Z

#### Dates

- Event date: 2026-09-03T00:00:00.000Z

Reasoning: This is a historical resource estimate from 2009 that is explicitly stated as non-compliant with current NI 43-101 standards and not verified by a QP, significantly limiting its reliability and materiality for current evaluation.

- Positive factor: Provides a historical baseline for the project's potential.

- Negative factor: Historical estimate, not NI 43-101 compliant.

- Negative factor: Not verified by a Qualified Person.

- Negative factor: Should not be relied upon as current.

Evidence · text

> A historical resource estimate of 6.0 million tonnes at an average grade of 0.09% eU3O8 for 11.4 million pounds of U3O8 was reported for Rio Puerco in 2009 by Monaro Mining NL \(the "Historical Resource "\).

## 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.