Midnight Sun Intercepts 1.0% Copper over 22 Metres and 0.98% Copper over 15 Metres at Dumbwa

Original announcement by tmx on

Company
Midnight Sun Mining Corp.
Ticker
MMA
Exchange
TSX
Region
Zambia
Primary commodity
Copper
Secondary commodities
None reported
Document categories
Drill results
Extracted
2026-09-16 11:08:53 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

Midnight Sun Mining Corp. reported significant copper drill results at the Dumbwa target in Zambia, including an intercept of 1.0% Cu over 22 metres. The drilling has established a mineralised strike length of nearly 1.5 kilometres.

Reasoning: Strong copper intercepts (up to 1.0% over 22m) and significant strike extension at the Dumbwa target, supported by robust QA/QC and QP sign-off.

Positive factors

  • significant copper intercepts
  • strike extension to 1.5km
  • QA/QC disclosed
  • QP signed

Negative factors

  • apparent width only

Facts used in scoring: 15

Extracted facts

Stored fact records: 15. Some facts used in scoring do not have a stored record.

Drill Results (15)

DBW-25-006Dumbwa · copperGrade: 0.25Grade Unit: %Intercept: 11 mView all details
Link to this fact

Identity

Hole ID
DBW-25-006
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.25
Grade Unit
%
Intercept
11 m
From
142 m
To
153 m
Hole Depth
200.65 m
Intercept Depth
142 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-006:142-153
Mining Method
open_pit

Location

Location
Central Zone
Easting
440670
Northing
8627812
CRS
WGS84
EPSG
35
Azimuth
270 °
Dip
-60 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Low grade copper intercept.

Evidence · table

“0.25”

Context: 11

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

DBW-25-006Dumbwa · copperGrade: 0.18Grade Unit: %Intercept: 4 mView all details
Link to this fact

Identity

Hole ID
DBW-25-006
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.18
Grade Unit
%
Intercept
4 m
From
159 m
To
163 m
Hole Depth
200.65 m
Intercept Depth
159 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-006:159-163
Mining Method
open_pit

Location

Location
Central Zone
Easting
440670
Northing
8627812
CRS
WGS84
EPSG
35
Azimuth
270 °
Dip
-60 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Low grade copper intercept.

Evidence · table

“0.18”

Context: 4

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

DBW-25-006Dumbwa · copperGrade: 0.2Grade Unit: %Intercept: 4 mView all details
Link to this fact

Identity

Hole ID
DBW-25-006
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.2
Grade Unit
%
Intercept
4 m
From
167 m
To
171 m
Hole Depth
200.65 m
Intercept Depth
167 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-006:167-171
Mining Method
open_pit

Location

Location
Central Zone
Easting
440670
Northing
8627812
CRS
WGS84
EPSG
35
Azimuth
270 °
Dip
-60 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Low grade copper intercept.

Evidence · table

“0.20”

Context: 4

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

DBW-25-009Dumbwa · copperGrade: 0.79Grade Unit: %Intercept: 5.25 mView all details
Link to this fact

Identity

Hole ID
DBW-25-009
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.79
Grade Unit
%
Intercept
5.25 m
From
119.75 m
To
125 m
Hole Depth
260 m
Intercept Depth
119.75 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-009:119.75-125
Mining Method
open_pit

Location

Location
Central Zone
Easting
440450
Northing
8627310
CRS
WGS84
EPSG
35
Azimuth
270 °
Dip
-60 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Strong copper intercept.

Evidence · table

“0.79”

Context: 5.25

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

DBW-25-009Dumbwa · copperGrade: 0.98Grade Unit: %Intercept: 15 mView all details
Link to this fact

Identity

Hole ID
DBW-25-009
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.98
Grade Unit
%
Intercept
15 m
From
155 m
To
170 m
Hole Depth
260 m
Intercept Depth
155 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-009:155-170
Mining Method
open_pit

Location

Location
Central Zone
Easting
440450
Northing
8627310
CRS
WGS84
EPSG
35
Azimuth
270 °
Dip
-60 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Strong copper intercept.

Evidence · table

“0.98”

Context: 15

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

DBW-25-009Dumbwa · copperGrade: 0.36Grade Unit: %Intercept: 8 mView all details
Link to this fact

Identity

Hole ID
DBW-25-009
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.36
Grade Unit
%
Intercept
8 m
From
178 m
To
186 m
Hole Depth
260 m
Intercept Depth
178 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-009:178-186
Mining Method
open_pit

Location

Location
Central Zone
Easting
440450
Northing
8627310
CRS
WGS84
EPSG
35
Azimuth
270 °
Dip
-60 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Low grade copper intercept.

Evidence · table

“0.36”

Context: 8

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

DBW-25-010Dumbwa · copperGrade: 0.31Grade Unit: %Intercept: 9 mView all details
Link to this fact

Identity

Hole ID
DBW-25-010
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.31
Grade Unit
%
Intercept
9 m
From
45 m
To
54 m
Hole Depth
170.1 m
Intercept Depth
45 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-010:45-54
Mining Method
open_pit

Location

Location
Central Zone
Easting
440300
Northing
8627310
CRS
WGS84
EPSG
35
Azimuth
90 °
Dip
-50 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Low grade copper intercept.

Evidence · table

“0.31”

Context: 9

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

DBW-25-010Dumbwa · copperGrade: 0.32Grade Unit: %Intercept: 9 mView all details
Link to this fact

Identity

Hole ID
DBW-25-010
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.32
Grade Unit
%
Intercept
9 m
From
101 m
To
110 m
Hole Depth
170.1 m
Intercept Depth
101 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-010:101-110
Mining Method
open_pit

Location

Location
Central Zone
Easting
440300
Northing
8627310
CRS
WGS84
EPSG
35
Azimuth
90 °
Dip
-50 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Low grade copper intercept.

Evidence · table

“0.32”

Context: 9

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

DBW-25-010Dumbwa · copperGrade: 1Grade Unit: %Intercept: 22 mView all details
Link to this fact

Identity

Hole ID
DBW-25-010
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
1
Grade Unit
%
Intercept
22 m
From
117 m
To
139 m
Hole Depth
170.1 m
Intercept Depth
117 m

Classification

Program
exploration
Sample Type
drill
Group ID
DBW-25-010:117-139
Mining Method
open_pit

Location

Location
Central Zone
Easting
440300
Northing
8627310
CRS
WGS84
EPSG
35
Azimuth
90 °
Dip
-50 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
SGS Labs
QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Strong copper intercept.

Evidence · table

“1.00”

Context: 22

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

AD-22-0018Dumbwa · copperGrade: 1.91Grade Unit: %Intercept: 20.6 mHistorical resultNeeds review: ungroundedView all details
Link to this fact

Identity

Hole ID
AD-22-0018
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
1.91
Grade Unit
%
Intercept
20.6 m

Classification

Program
exploration
Sample Type
drill
Mining Method
open_pit

QA/QC

QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
Yes
Review Reason
ungrounded
Interp. Status
scored
Historical
Yes
Historical Source Date
2022-01-01T00:00:00.000Z

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Very strong copper intercept.

Evidence · text

“1.91% copper”

Context: 20.60 m

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

AD-22-0018Dumbwa · goldGrade: 2Grade Unit: g/tIntercept: 20.6 mHistorical resultNeeds review: ungroundedView all details
Link to this fact

Identity

Hole ID
AD-22-0018
Project
Dumbwa
Commodity
gold
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
2
Grade Unit
g/t
Intercept
20.6 m

Classification

Program
exploration
Sample Type
drill
Mining Method
open_pit

QA/QC

QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
Yes
Review Reason
ungrounded
Interp. Status
scored
Historical
Yes
Historical Source Date
2022-01-01T00:00:00.000Z

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Strong gold intercept.

Evidence · text

“2.00 g/t gold”

Context: 20.60 m

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

AD-22-0018Dumbwa · silverGrade: 40.91Grade Unit: g/tIntercept: 20.6 mHistorical resultNeeds review: ungroundedView all details
Link to this fact

Identity

Hole ID
AD-22-0018
Project
Dumbwa
Commodity
silver
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
40.91
Grade Unit
g/t
Intercept
20.6 m

Classification

Program
exploration
Sample Type
drill
Mining Method
open_pit

QA/QC

QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
Yes
Review Reason
ungrounded
Interp. Status
scored
Historical
Yes
Historical Source Date
2022-01-01T00:00:00.000Z

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Strong silver intercept.

Evidence · text

“40.91 g/t silver”

Context: 20.60 m

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

AD-22-0019Dumbwa · copperGrade: 1.01Grade Unit: %Intercept: 32.25 mHistorical resultNeeds review: ungroundedView all details
Link to this fact

Identity

Hole ID
AD-22-0019
Project
Dumbwa
Commodity
copper
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
1.01
Grade Unit
%
Intercept
32.25 m

Classification

Program
exploration
Sample Type
drill
Mining Method
open_pit

QA/QC

QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
Yes
Review Reason
ungrounded
Interp. Status
scored
Historical
Yes
Historical Source Date
2022-01-01T00:00:00.000Z

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Solid copper intercept.

Evidence · text

“1.01% copper”

Context: 32.25 m

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

AD-22-0019Dumbwa · goldGrade: 0.52Grade Unit: g/tIntercept: 32.25 mHistorical resultNeeds review: ungroundedView all details
Link to this fact

Identity

Hole ID
AD-22-0019
Project
Dumbwa
Commodity
gold
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
0.52
Grade Unit
g/t
Intercept
32.25 m

Classification

Program
exploration
Sample Type
drill
Mining Method
open_pit

QA/QC

QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
Yes
Review Reason
ungrounded
Interp. Status
scored
Historical
Yes
Historical Source Date
2022-01-01T00:00:00.000Z

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Moderate gold intercept.

Evidence · text

“0.52 g/t gold”

Context: 32.25 m

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

AD-22-0019Dumbwa · silverGrade: 39.69Grade Unit: g/tIntercept: 32.25 mHistorical resultNeeds review: ungroundedView all details
Link to this fact

Identity

Hole ID
AD-22-0019
Project
Dumbwa
Commodity
silver
Region
zambia
Reported Region
zambia
Ticker
MMA

Geometry

Grade
39.69
Grade Unit
g/t
Intercept
32.25 m

Classification

Program
exploration
Sample Type
drill
Mining Method
open_pit

QA/QC

QA/QC Disclosed
Yes
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Review

Needs Review
Yes
Review Reason
ungrounded
Interp. Status
scored
Historical
Yes
Historical Source Date
2022-01-01T00:00:00.000Z

Dates

Event date
2025-11-18T00:00:00.000Z

Reasoning: Strong silver intercept.

Evidence · text

“39.69 g/t silver”

Context: 32.25 m

Tags used in scoring

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

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.