North Shore Intersects Significant Uranium Mineralization in All Phase 1 Drill Holes at Rio Puerco
Original announcement by tmx on
- 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
Analysis by Minestarters Atlas
Minestarters Atlas analysis
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 factors
- Significant uranium mineralization intersected in all 13 drill holes
- Confirmed historical mineralization zones
- Favorable characteristics for in-situ-recovery (ISR) mining (below water table, grade x thickness)
- Company plans Phase 2 drilling program in Q4 2026
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
- 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
Extracted facts
Stored fact records: 22. Some facts used in scoring do not have a stored record.
Drill Results (21)
RP-26-18-25Rio Puerco North · uraniumGrade: 0.132Grade Unit: %Intercept: 3.96 mView all detailsHide details
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 factors
- Significant uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
- Confirmed historical mineralization zones
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.132”
Context: 13.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.96
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-25Rio Puerco North · uraniumGrade: 0.091Grade Unit: %Intercept: 2.29 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.091”
Context: 7.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 2.29
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-32Rio Puerco North · uraniumGrade: 0.06Grade Unit: %Intercept: 3.51 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.060”
Context: 11.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.51
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-32Rio Puerco North · uraniumGrade: 0.053Grade Unit: %Intercept: 3.2 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.053”
Context: 10.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.2
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-39Rio Puerco North · uraniumGrade: 0.295Grade Unit: %Intercept: 8.23 mView all detailsHide details
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 factors
- High-grade uranium mineralization intersected
- Significant intercept length
- Favorable for in-situ-recovery (ISR) mining
- Confirmed historical mineralization zones
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.295”
Context: 27.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 8.23
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-96Rio Puerco North · uraniumGrade: 0.097Grade Unit: %Intercept: 3.35 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.097”
Context: 11.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.35
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-233Rio Puerco North · uraniumGrade: 0.17Grade Unit: %Intercept: 2.13 mView all detailsHide details
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 factors
- Significant uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
- Confirmed historical mineralization zones
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.170”
Context: 7.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 2.13
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-408Rio Puerco North · uraniumGrade: 0.082Grade Unit: %Intercept: 2.74 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.082”
Context: 9.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 2.74
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-467Rio Puerco North · uraniumGrade: 0.109Grade Unit: %Intercept: 1.52 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.109”
Context: 5.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 1.52
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-467Rio Puerco North · uraniumGrade: 0.046Grade Unit: %Intercept: 1.98 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.046”
Context: 6.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 1.98
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-467Rio Puerco North · uraniumGrade: 0.046Grade Unit: %Intercept: 7.16 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.046”
Context: 23.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 7.16
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-510Rio Puerco North · uraniumGrade: 0.112Grade Unit: %Intercept: 3.2 mView all detailsHide details
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 factors
- Significant uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
- Confirmed historical mineralization zones
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.112”
Context: 10.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.2
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-510Rio Puerco North · uraniumGrade: 0.086Grade Unit: %Intercept: 1.98 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.086”
Context: 6.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 1.98
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-512Rio Puerco North · uraniumGrade: 0.09Grade Unit: %Intercept: 3.96 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.090”
Context: 13.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.96
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-512Rio Puerco North · uraniumGrade: 0.027Grade Unit: %Intercept: 8.38 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.027”
Context: 27.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 8.38
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-613Rio Puerco North · uraniumGrade: 0.109Grade Unit: %Intercept: 1.37 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.109”
Context: 4.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 1.37
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-613Rio Puerco North · uraniumGrade: 0.057Grade Unit: %Intercept: 2.44 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.057”
Context: 8.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 2.44
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-640Rio Puerco North · uraniumGrade: 0.057Grade Unit: %Intercept: 4.27 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.057”
Context: 14.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 4.27
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-640Rio Puerco North · uraniumGrade: 0.331Grade Unit: %Intercept: 3.81 mView all detailsHide details
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 factors
- High-grade uranium mineralization intersected
- Significant intercept length
- Favorable for in-situ-recovery (ISR) mining
- Confirmed historical mineralization zones
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.331”
Context: 12.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.81
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-691Rio Puerco North · uraniumGrade: 0.072Grade Unit: %Intercept: 4.88 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.072”
Context: 16.0
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 4.88
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
RP-26-18-804Rio Puerco North · uraniumGrade: 0.042Grade Unit: %Intercept: 3.2 mView all detailsHide details
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 factors
- Uranium mineralization intersected
- Favorable for in-situ-recovery (ISR) mining
Negative factors
- Grades are estimated eU3O8 from gamma logging, not chemically verified
Evidence · table
“0.042”
Context: 10.5
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.2
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "mixed"
Resource Estimates (1)
inferredRio Puerco · uraniumTonnes: 6000000Grade: 0.09Grade Unit: %eU 3 O 8Contained Metal: 11.4Contained Unit: mlbHistorical resultNeeds review: historical_restatementView all detailsHide details
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 factors
- Provides historical context for the project's potential
Negative factors
- Not current and explicitly stated as not to be relied upon
- Does not comply with Canadian NI 43-101 guidelines
- 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 Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Stale Estimatenegative
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.