Excellon Restarts Mining at Mallay and Highlights Emerging "Footwall Zone" Upside

Original announcement by tmx on

Company
Excellon Resources Inc.
Ticker
EXN
Exchange
TSX
Region
Peru
Primary commodity
Silver
Secondary commodities
Lead, Zinc
Document categories
Production, Drill results
Extracted
2026-08-23 10:47:52 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

Excellon has restarted underground mining and dewatering activities at the Mallay mine in Peru. The company also highlighted an emerging 'Footwall Zone' characterized by wide mineralized intervals, supported by historical drill results.

Reasoning: The company is successfully restarting mining operations at Mallay and has identified a significant new exploration target (Footwall Zone), though the reported high-grade intercepts are historical and unverified.

Positive factors

  • Mine restart advancing on multiple fronts
  • Identification of emerging Footwall Zone with potential for wider mineralized intervals
  • Initial metallurgical testwork supports blending

Negative factors

  • Footwall Zone results are historical and not verified by current QP
  • True widths for historical intercepts are unknown

Facts used in scoring: 18

Atlas analysis — Excellon Resources Inc.: Excellon Restarts Mining at Mallay and Highlights Emerging "Footwall Zone" Upside. 92.35 g/t over 8.2 m; 86.78 g/t over 7.6 m; 41.1 g/t over 10.7 m

Classification and evidence

Apparent Width Onlynegative

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

Why it applies: Historical drill intercepts are reported in core lengths and true widths are unknown.

Evidence · text

“True widths are unknown and may vary by hole due to intercept angles created by fanned drill arrays.”

No QA/QC Disclosurenegative

Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.

Why it applies: The historical results are noted as not being verified by a current Qualified Person.

Evidence · text

“A Qualified Person has not completed sufficient work to verify these historical drill results”

Extracted facts

Stored fact records: 12. Some facts used in scoring do not have a stored record.

Drill Results (12)

ISG-10-01Mallay · silverGrade: 92.35Grade Unit: g/tIntercept: 8.2 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
ISG-10-01
Project
Mallay
Commodity
silver
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
92.35
Grade Unit
g/t
Intercept
8.2 m
From
61.7 m
To
69.9 m

Classification

Sample Type
drill
Group ID
ISG-10-01:61.7-69.9

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2010-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 92.35 g/t silver is weak against the default band [500, 200, 100, 30] g/t. Grade×width 757.3 g/t·m is weak.

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“92.35”

Context: ISG-10-01

ISG-10-01Mallay · leadGrade: 0.97Grade Unit: %Intercept: 8.2 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
ISG-10-01
Project
Mallay
Commodity
lead
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
0.97
Grade Unit
%
Intercept
8.2 m
From
61.7 m
To
69.9 m

Classification

Sample Type
drill
Group ID
ISG-10-01:61.7-69.9

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2010-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 0.97 % lead is below against the default band [10, 6, 3, 1] %. Grade×width 8.0 %·m is below.

Negative factors

  • 0.97 % lead is below the weak threshold (1 %) on the default band.
  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“0.97”

Context: ISG-10-01

ISG-10-01Mallay · zincGrade: 1.74Grade Unit: %Intercept: 8.2 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
ISG-10-01
Project
Mallay
Commodity
zinc
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
1.74
Grade Unit
%
Intercept
8.2 m
From
61.7 m
To
69.9 m

Classification

Sample Type
drill
Group ID
ISG-10-01:61.7-69.9

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2010-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 1.74 % zinc is below against the default band [18, 10, 5, 2] %. Grade×width 14.3 %·m is below.

Negative factors

  • 1.74 % zinc is below the weak threshold (2 %) on the default band.
  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“1.74”

Context: ISG-10-01

ISG-10-04Mallay · silverGrade: 41.1Grade Unit: g/tIntercept: 10.7 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
ISG-10-04
Project
Mallay
Commodity
silver
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
41.1
Grade Unit
g/t
Intercept
10.7 m
From
65.8 m
To
76.5 m

Classification

Sample Type
drill
Group ID
ISG-10-04:65.8-76.5

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2010-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 41.1 g/t silver is weak against the default band [500, 200, 100, 30] g/t. Grade×width 439.8 g/t·m is weak.

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“41.10”

Context: ISG-10-04

ISG-10-04Mallay · leadGrade: 0.41Grade Unit: %Intercept: 10.7 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
ISG-10-04
Project
Mallay
Commodity
lead
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
0.41
Grade Unit
%
Intercept
10.7 m
From
65.8 m
To
76.5 m

Classification

Sample Type
drill
Group ID
ISG-10-04:65.8-76.5

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2010-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 0.41 % lead is below against the default band [10, 6, 3, 1] %. Grade×width 4.4 %·m is below.

Negative factors

  • 0.41 % lead is below the weak threshold (1 %) on the default band.
  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“0.41”

Context: ISG-10-04

ISG-10-04Mallay · zincGrade: 1.48Grade Unit: %Intercept: 10.7 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
ISG-10-04
Project
Mallay
Commodity
zinc
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
1.48
Grade Unit
%
Intercept
10.7 m
From
65.8 m
To
76.5 m

Classification

Sample Type
drill
Group ID
ISG-10-04:65.8-76.5

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2010-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 1.48 % zinc is weak against the default band [18, 10, 5, 2] %. Grade×width 15.8 %·m is weak (grade alone is below; the better of the two is used).

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“1.48”

Context: ISG-10-04

PS-13-68Mallay · silverGrade: 86.78Grade Unit: g/tIntercept: 7.6 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
PS-13-68
Project
Mallay
Commodity
silver
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
86.78
Grade Unit
g/t
Intercept
7.6 m
From
0.4 m
To
7.9 m

Classification

Sample Type
drill
Group ID
PS-13-68:0.4-7.9

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2013-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 86.78 g/t silver is weak against the default band [500, 200, 100, 30] g/t. Grade×width 659.5 g/t·m is weak.

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“86.78”

Context: PS-13-68

PS-13-68Mallay · leadGrade: 2.26Grade Unit: %Intercept: 7.6 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
PS-13-68
Project
Mallay
Commodity
lead
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
2.26
Grade Unit
%
Intercept
7.6 m
From
0.4 m
To
7.9 m

Classification

Sample Type
drill
Group ID
PS-13-68:0.4-7.9

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2013-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 2.26 % lead is weak against the default band [10, 6, 3, 1] %. Grade×width 17.2 %·m is weak.

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“2.26”

Context: PS-13-68

PS-13-68Mallay · zincGrade: 3.02Grade Unit: %Intercept: 7.6 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
PS-13-68
Project
Mallay
Commodity
zinc
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
3.02
Grade Unit
%
Intercept
7.6 m
From
0.4 m
To
7.9 m

Classification

Sample Type
drill
Group ID
PS-13-68:0.4-7.9

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2013-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 3.02 % zinc is weak against the default band [18, 10, 5, 2] %. Grade×width 23.0 %·m is weak.

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“3.02”

Context: PS-13-68

MLL17-73Mallay · silverGrade: 52.25Grade Unit: g/tIntercept: 4.8 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
MLL17-73
Project
Mallay
Commodity
silver
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
52.25
Grade Unit
g/t
Intercept
4.8 m
From
9.5 m
To
14.3 m

Classification

Sample Type
drill
Group ID
MLL17-73:9.5-14.3

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2017-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 52.25 g/t silver is weak against the default band [500, 200, 100, 30] g/t. Grade×width 250.8 g/t·m is weak.

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“52.25”

Context: MLL17-73

MLL17-73Mallay · leadGrade: 1.06Grade Unit: %Intercept: 4.8 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
MLL17-73
Project
Mallay
Commodity
lead
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
1.06
Grade Unit
%
Intercept
4.8 m
From
9.5 m
To
14.3 m

Classification

Sample Type
drill
Group ID
MLL17-73:9.5-14.3

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2017-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 1.06 % lead is weak against the default band [10, 6, 3, 1] %. Grade×width 5.1 %·m is below (grade alone is weak; the better of the two is used).

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“1.06”

Context: MLL17-73

MLL17-73Mallay · zincGrade: 2.02Grade Unit: %Intercept: 4.8 mHistorical resultNeeds review: historical_restatementView all details
Link to this fact

Identity

Hole ID
MLL17-73
Project
Mallay
Commodity
zinc
Region
peru
Reported Region
Peru
Ticker
EXN

Geometry

Grade
2.02
Grade Unit
%
Intercept
4.8 m
From
9.5 m
To
14.3 m

Classification

Sample Type
drill
Group ID
MLL17-73:9.5-14.3

Review

Needs Review
Yes
Review Reason
historical_restatement
Interp. Status
scored
Historical
Yes
Historical Source Date
2017-01-01T00:00:00.000Z

Dates

Event date
2026-02-05T00:00:00.000Z

Reasoning: Expanded from assay table. 2.02 % zinc is weak against the default band [18, 10, 5, 2] %. Grade×width 9.7 %·m is below (grade alone is weak; the better of the two is used).

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“2.02”

Context: MLL17-73

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.