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

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551

Original source: https://money.tmx.com/en/quote/NSU/news/7860137275361938/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h

Publisher: tmx

Original announcement: 2026-09-03T11:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: North Shore Uranium Ltd.

- Ticker: NSU

- Exchange: TSX

- Region: New Mexico

- Primary commodity: Uranium

- Secondary commodities: None reported

- Document categories: Drill results, Resource update

- Extracted: 2026-09-16 14:32:58 UTC

Narrative sentiment: 0.70 · Bullish

## Minestarters Atlas summary

North Shore Uranium Ltd. reported significant uranium mineralization in all 13 Phase 1 drill holes at its Rio Puerco project in New Mexico. The drilling confirmed historical mineralization zones and identified characteristics favorable for in-situ-recovery \(ISR\) mining. The company plans a Phase 2 program in Q4 2026 to further validate data and work towards a NI 43-101 compliant resource, building on a historical estimate of 6.0 million tonnes at 0.09% eU3O8.

Reasoning: North Shore Uranium's Phase 1 drill program at Rio Puerco successfully intersected significant uranium mineralization in all 13 holes, validating historical data and showing characteristics favorable for ISR mining. The company plans a Phase 2 program to advance towards a NI 43-101 compliant resource, despite the current reliance on estimated grades and a historical resource.

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

- Positive factor: Confirmed historical mineralization zones

- Positive factor: Favorable characteristics for in-situ-recovery \(ISR\) mining \(below water table, grade x thickness\)

- Positive factor: Company plans Phase 2 drilling program in Q4 2026

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

- Negative factor: Historical resource estimate is not current or NI 43-101 compliant

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

Facts used in scoring: 22

## Classification and evidence

No classification tags are available.

## Extracted facts

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

## Drill Results (21)

### RP-26-18-25

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-0)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.132
- Grade Unit: %
- Intercept: 3.96 m
- True Width: 3.96 m
- From: 178.31 m
- To: 182.27 m
- Hole Depth: 215.95 m
- Intercept Depth: 178.31 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-25:178.31-182.27
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms significant uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Significant uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Positive factor: Confirmed historical mineralization zones

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.132

Context: 13.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 3.96

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-25

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-1)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.091
- Grade Unit: %
- Intercept: 2.29 m
- True Width: 2.29 m
- From: 183.8 m
- To: 186.02 m
- Hole Depth: 215.95 m
- Intercept Depth: 178.31 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-25:183.8-186.02
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.091

Context: 7.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 2.29

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-32

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-2)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.06
- Grade Unit: %
- Intercept: 3.51 m
- True Width: 3.51 m
- From: 168.25 m
- To: 171.75 m
- Hole Depth: 209.95 m
- Intercept Depth: 168.25 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-32:168.25-171.75
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.060

Context: 11.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 3.51

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-32

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-3)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.053
- Grade Unit: %
- Intercept: 3.2 m
- True Width: 3.2 m
- From: 175.56 m
- To: 178.76 m
- Hole Depth: 209.95 m
- Intercept Depth: 168.25 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-32:175.56-178.76
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.053

Context: 10.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 3.2

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-39

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-4)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.295
- Grade Unit: %
- Intercept: 8.23 m
- True Width: 8.23 m
- From: 200.47 m
- To: 208.76 m
- Hole Depth: 229.46 m
- Intercept Depth: 200.47 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-39:200.47-208.76
- Mining Method: underground

#### Location

- Location: JmwB
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This high-grade and significant intercept confirms strong uranium mineralization, contributing significantly to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: High-grade uranium mineralization intersected

- Positive factor: Significant intercept length

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Positive factor: Confirmed historical mineralization zones

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.295

Context: 27.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 8.23

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-96

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-5)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.097
- Grade Unit: %
- Intercept: 3.35 m
- True Width: 3.35 m
- From: 200.56 m
- To: 203.91 m
- Hole Depth: 233.93 m
- Intercept Depth: 200.56 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-96:200.56-203.91
- Mining Method: underground

#### Location

- Location: JmwB
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.097

Context: 11.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 3.35

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-233

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-6)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.17
- Grade Unit: %
- Intercept: 2.13 m
- True Width: 2.13 m
- From: 208.88 m
- To: 211.01 m
- Hole Depth: 221.96 m
- Intercept Depth: 208.88 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-233:208.88-211.01
- Mining Method: underground

#### Location

- Location: JmwB
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms significant uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Significant uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Positive factor: Confirmed historical mineralization zones

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.170

Context: 7.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 2.13

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-408

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-7)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.082
- Grade Unit: %
- Intercept: 2.74 m
- True Width: 2.74 m
- From: 157.43 m
- To: 160.17 m
- Hole Depth: 197.94 m
- Intercept Depth: 157.43 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-408:157.43-160.17
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.082

Context: 9.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 2.74

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-467

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-8)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.109
- Grade Unit: %
- Intercept: 1.52 m
- True Width: 1.52 m
- From: 149.87 m
- To: 151.4 m
- Hole Depth: 200.95 m
- Intercept Depth: 149.87 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-467:149.87-151.4
- Mining Method: underground

#### Location

- Location: JmwB
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.109

Context: 5.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 1.52

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-467

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-9)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.046
- Grade Unit: %
- Intercept: 1.98 m
- True Width: 1.98 m
- From: 165.11 m
- To: 167.03 m
- Hole Depth: 200.95 m
- Intercept Depth: 149.87 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-467:165.11-167.03
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.046

Context: 6.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 1.98

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-467

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-10)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.046
- Grade Unit: %
- Intercept: 7.16 m
- True Width: 7.16 m
- From: 175.78 m
- To: 182.94 m
- Hole Depth: 200.95 m
- Intercept Depth: 149.87 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-467:175.78-182.94
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.046

Context: 23.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 7.16

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-510

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-11)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.112
- Grade Unit: %
- Intercept: 3.2 m
- True Width: 3.2 m
- From: 157.49 m
- To: 160.69 m
- Hole Depth: 221.96 m
- Intercept Depth: 157.49 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-510:157.49-160.69
- Mining Method: underground

#### Location

- Location: JmwB
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms significant uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Significant uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Positive factor: Confirmed historical mineralization zones

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.112

Context: 10.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 3.2

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-510

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-12)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.086
- Grade Unit: %
- Intercept: 1.98 m
- True Width: 1.98 m
- From: 173.34 m
- To: 175.32 m
- Hole Depth: 221.96 m
- Intercept Depth: 157.49 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-510:173.34-175.32
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.086

Context: 6.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 1.98

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-512

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-13)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.09
- Grade Unit: %
- Intercept: 3.96 m
- True Width: 3.96 m
- From: 173.43 m
- To: 177.39 m
- Hole Depth: 227.93 m
- Intercept Depth: 173.43 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-512:173.43-177.39
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.090

Context: 13.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 3.96

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-512

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-14)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.027
- Grade Unit: %
- Intercept: 8.38 m
- True Width: 8.38 m
- From: 178.31 m
- To: 186.69 m
- Hole Depth: 227.93 m
- Intercept Depth: 173.43 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-512:178.31-186.69
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.027

Context: 27.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 8.38

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-613

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-15)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.109
- Grade Unit: %
- Intercept: 1.37 m
- True Width: 1.37 m
- From: 187.67 m
- To: 189.04 m
- Hole Depth: 203.94 m
- Intercept Depth: 187.67 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-613:187.67-189.04
- Mining Method: underground

#### Location

- Location: JmwD
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.109

Context: 4.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 1.37

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-613

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-16)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.057
- Grade Unit: %
- Intercept: 2.44 m
- True Width: 2.44 m
- From: 190.1 m
- To: 192.54 m
- Hole Depth: 203.94 m
- Intercept Depth: 187.67 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-613:190.1-192.54
- Mining Method: underground

#### Location

- Location: JmwD
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.057

Context: 8.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 2.44

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-640

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-17)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.057
- Grade Unit: %
- Intercept: 4.27 m
- True Width: 4.27 m
- From: 166.09 m
- To: 170.35 m
- Hole Depth: 200.95 m
- Intercept Depth: 166.09 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-640:166.09-170.35
- Mining Method: underground

#### Location

- Location: JmwD
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.057

Context: 14.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 4.27

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-640

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-18)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.331
- Grade Unit: %
- Intercept: 3.81 m
- True Width: 3.81 m
- From: 181.63 m
- To: 185.44 m
- Hole Depth: 200.95 m
- Intercept Depth: 166.09 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-640:181.63-185.44
- Mining Method: underground

#### Location

- Location: JmwD
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This high-grade and significant intercept confirms strong uranium mineralization, contributing significantly to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: High-grade uranium mineralization intersected

- Positive factor: Significant intercept length

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Positive factor: Confirmed historical mineralization zones

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.331

Context: 12.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 3.81

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-691

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-19)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.072
- Grade Unit: %
- Intercept: 4.88 m
- True Width: 4.88 m
- From: 221.83 m
- To: 226.77 m
- Hole Depth: 247.44 m
- Intercept Depth: 221.83 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-691:221.83-226.77
- Mining Method: underground

#### Location

- Location: JmwC
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.072

Context: 16.0

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 4.88

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

### RP-26-18-804

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-drill-facts-20)

Rio Puerco North · uranium

#### Identity

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

#### Geometry

- Grade: 0.042
- Grade Unit: %
- Intercept: 3.2 m
- True Width: 3.2 m
- From: 187.21 m
- To: 190.41 m
- Hole Depth: 215.95 m
- Intercept Depth: 187.21 m

#### Classification

- Program: mixed
- Sample Type: drill
- Group ID: RP-26-18-804:187.21-190.41
- Mining Method: underground

#### Location

- Location: JmwD
- Loc. Source: document

#### QA/QC

- Laboratory: Century Geophysical Corporation
- QA/QC Disclosed: Yes
- QP Signed: Yes
- QA/QC Methods: standards

#### Metal Equivalent

- Assumptions Disclosed: Yes

#### Compositing

- Cutoff Grade: 0.02
- Cutoff Unit: %eU 3 O 8

#### Review

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

#### Dates

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

Reasoning: This intercept confirms uranium mineralization, contributing to the validation of historical data and the potential for ISR mining, though grades are estimated.

- Positive factor: Uranium mineralization intersected

- Positive factor: Favorable for in-situ-recovery \(ISR\) mining

- Negative factor: Grades are estimated eU3O8 from gamma logging, not chemically verified

Evidence · table

> 0.042

Context: 10.5

#### Tags used in scoring

**True Width Disclosed**

Polarity: positive

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

Why it applies: true\_width\_m is 3.2

**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

**Infill Drilling**

Polarity: neutral

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

Why it applies: drill\_program\_type is "mixed"

## Resource Estimates (1)

### inferred

[Link to this fact](https://atlas-extractions.minestarters.com/news/north-shore-intersects-significant-uranium-mineralization-in-all-phase-1-drill-h--dd724cce-ccd5-4c8c-bd8b-d90c921fa551#fact-resource-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

#### Resource scope

- Estimate type: resource
- Reporting standards: jorc
- QP Signed: No
- Resource group id: resource:6e6eb02a1d52e89b1e0e
- Deposit or zone: Rio Puerco

#### Resource Data

- Category: inferred
- Tonnes: 6000000
- Grade: 0.09
- Grade Unit: %eU 3 O 8
- Contained Metal: 11.4
- Contained Unit: mlb
- Cutoff Grade: 0.03
- Cutoff Unit: %eU 3 O 8

#### Prior Estimate

- Resource Date: 2009

#### Review

- Needs Review: Yes
- Review Reason: historical\_restatement
- 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, explicitly stated as not current and not compliant with NI 43-101, limiting its reliability and materiality for current evaluation.

- Positive factor: Provides historical context for the project's potential

- Negative factor: Not current and explicitly stated as not to be relied upon

- Negative factor: Does not comply with Canadian NI 43-101 guidelines

- Negative factor: Not verified by a Qualified Person for the current company

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 \(the " Historical Resource "\). The Historical Resource was based on drill data gathered by Kerr McGee in the 1960s and 1970s

#### Tags used in scoring

**Inferred Resource**

Polarity: negative

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

Why it applies: category is "inferred"

**Cut-off Disclosed**

Polarity: positive

Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff\_grade is stated

**JORC Compliant**

Polarity: positive

Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard.

Why it applies: reporting\_standards includes jorc

**Stale Estimate**

Polarity: negative

Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding.

Why it applies: effective date is 17.7 years before this release

## 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.