Seabridge Gold Provides Updated Mineral Resource Estimates for KSM Project

Original announcement by tmx on

Company
Seabridge Gold Inc.
Ticker
SEA
Exchange
TSX
Region
British Columbia
Primary commodity
Gold
Secondary commodities
Copper, Silver, Molybdenum
Document categories
Resource update
Extracted
2026-09-14 22:50:34 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

Seabridge Gold announced updated Mineral Resource Estimates for its KSM Project in northwestern British Columbia, effective March 30, 2026. The update shows significant increases in contained gold, copper, silver, and molybdenum across Measured, Indicated, and Inferred categories. These increases are attributed to revised metal price assumptions and operating costs, with the underlying mineral resource model remaining unchanged, and the company states the changes are not considered material.

Reasoning: Seabridge Gold's updated KSM Project mineral resource estimates show substantial increases in contained gold, copper, silver, and molybdenum across all categories. However, these increases are primarily due to revised metal price assumptions and operating costs rather than new geological data, and the company explicitly states the changes are not considered material.

Positive factors

  • contained_metal_growth
  • qp_signed
  • ni_43_101_compliant

Negative factors

  • stale_estimate
  • dilutive_growth

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

Facts used in scoring: 72

Extracted facts

Stored fact records: 72. Some facts used in scoring do not have a stored record.

Resource Estimates (72)

measuredKSM Project · goldTonnes: 700000000Grade: 0.67Grade Unit: g/tContained Metal: 15.1Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:07ee28f962f3af23f2ee
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
measured
Tonnes
700000000
Grade
0.67
Grade Unit
g/t
Contained Metal
15.1
Contained Unit
moz
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: High-grade gold in a large Measured open-pit resource.

Evidence · table

“0.67”

Context: 700,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · copperTonnes: 700000000Grade: 0.19Grade Unit: %Contained Metal: 2932Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:07ee28f962f3af23f2ee
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
measured
Tonnes
700000000
Grade
0.19
Grade Unit
%
Contained Metal
2932
Contained Unit
mlb
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a large Measured open-pit resource.

Evidence · table

“0.19”

Context: 700,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · silverTonnes: 700000000Grade: 3.26Grade Unit: g/tContained Metal: 73.4Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:07ee28f962f3af23f2ee
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
measured
Tonnes
700000000
Grade
3.26
Grade Unit
g/t
Contained Metal
73.4
Contained Unit
moz
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade silver in a large Measured open-pit resource.

Evidence · table

“3.26”

Context: 700,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · molybdenumTonnes: 700000000Grade: 52Grade Unit: ppmContained Metal: 80Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:07ee28f962f3af23f2ee
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
measured
Tonnes
700000000
Grade
52
Grade Unit
ppm
Contained Metal
80
Contained Unit
mlb
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade molybdenum in a large Measured open-pit resource.

Evidence · table

“52”

Context: 700,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · goldTonnes: 1105000000Grade: 0.62Grade Unit: g/tContained Metal: 22Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:a18b3f7fe0b842dad312
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
measured
Tonnes
1105000000
Grade
0.62
Grade Unit
g/t
Contained Metal
22
Contained Unit
moz
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: High-grade gold in a very large Measured open-pit resource.

Evidence · table

“0.62”

Context: 1,105,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · copperTonnes: 1105000000Grade: 0.11Grade Unit: %Contained Metal: 2680Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:a18b3f7fe0b842dad312
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
measured
Tonnes
1105000000
Grade
0.11
Grade Unit
%
Contained Metal
2680
Contained Unit
mlb
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a very large Measured open-pit resource.

Evidence · table

“0.11”

Context: 1,105,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · silverTonnes: 1105000000Grade: 1.78Grade Unit: g/tContained Metal: 63.2Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:a18b3f7fe0b842dad312
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
measured
Tonnes
1105000000
Grade
1.78
Grade Unit
g/t
Contained Metal
63.2
Contained Unit
moz
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a very large Measured open-pit resource.

Evidence · table

“1.78”

Context: 1,105,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · molybdenumTonnes: 1105000000Grade: 86Grade Unit: ppmContained Metal: 210Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:a18b3f7fe0b842dad312
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
measured
Tonnes
1105000000
Grade
86
Grade Unit
ppm
Contained Metal
210
Contained Unit
mlb
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Strong-grade molybdenum in a very large Measured open-pit resource.

Evidence · table

“86”

Context: 1,105,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · goldTonnes: 1805000000Grade: 0.64Grade Unit: g/tContained Metal: 37.1Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:b7b9c2b1a135bf94f8d2
Deposit or zone
Total Measured
Mining method
open_pit

Resource Data

Category
measured
Tonnes
1805000000
Grade
0.64
Grade Unit
g/t
Contained Metal
37.1
Contained Unit
moz

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: High-grade gold in a very large Measured resource.

Evidence · table

“0.64”

Context: 1,805,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · copperTonnes: 1805000000Grade: 0.14Grade Unit: %Contained Metal: 5612Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:b7b9c2b1a135bf94f8d2
Deposit or zone
Total Measured
Mining method
open_pit

Resource Data

Category
measured
Tonnes
1805000000
Grade
0.14
Grade Unit
%
Contained Metal
5612
Contained Unit
mlb

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a very large Measured resource.

Evidence · table

“0.14”

Context: 1,805,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · silverTonnes: 1805000000Grade: 2.35Grade Unit: g/tContained Metal: 136.6Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:b7b9c2b1a135bf94f8d2
Deposit or zone
Total Measured
Mining method
open_pit

Resource Data

Category
measured
Tonnes
1805000000
Grade
2.35
Grade Unit
g/t
Contained Metal
136.6
Contained Unit
moz

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a very large Measured resource.

Evidence · table

“2.35”

Context: 1,805,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

measuredKSM Project · molybdenumTonnes: 1805000000Grade: 73Grade Unit: ppmContained Metal: 290Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:b7b9c2b1a135bf94f8d2
Deposit or zone
Total Measured
Mining method
open_pit

Resource Data

Category
measured
Tonnes
1805000000
Grade
73
Grade Unit
ppm
Contained Metal
290
Contained Unit
mlb

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Strong-grade molybdenum in a very large Measured resource.

Evidence · table

“73”

Context: 1,805,000

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · goldTonnes: 1922000000Grade: 0.46Grade Unit: g/tContained Metal: 28.4Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:81fd0170754004a8454e
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
1922000000
Grade
0.46
Grade Unit
g/t
Contained Metal
28.4
Contained Unit
moz
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade gold in a very large Indicated open-pit resource.

Evidence · table

“0.46”

Context: 1,922,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · copperTonnes: 1922000000Grade: 0.13Grade Unit: %Contained Metal: 5508Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:81fd0170754004a8454e
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
1922000000
Grade
0.13
Grade Unit
%
Contained Metal
5508
Contained Unit
mlb
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a very large Indicated open-pit resource.

Evidence · table

“0.13”

Context: 1,922,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · silverTonnes: 1922000000Grade: 2.7Grade Unit: g/tContained Metal: 166.8Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:81fd0170754004a8454e
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
1922000000
Grade
2.7
Grade Unit
g/t
Contained Metal
166.8
Contained Unit
moz
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a very large Indicated open-pit resource.

Evidence · table

“2.7”

Context: 1,922,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · molybdenumTonnes: 1922000000Grade: 65Grade Unit: ppmContained Metal: 274Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:81fd0170754004a8454e
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
1922000000
Grade
65
Grade Unit
ppm
Contained Metal
274
Contained Unit
mlb
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Strong-grade molybdenum in a very large Indicated open-pit resource.

Evidence · table

“65”

Context: 1,922,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · goldTonnes: 1069000000Grade: 0.36Grade Unit: g/tContained Metal: 12.4Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:3674a16bef730047fa40
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
1069000000
Grade
0.36
Grade Unit
g/t
Contained Metal
12.4
Contained Unit
moz
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade gold in a very large Indicated open-pit resource.

Evidence · table

“0.36”

Context: 1,069,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · copperTonnes: 1069000000Grade: 0.08Grade Unit: %Contained Metal: 1885Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:3674a16bef730047fa40
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
1069000000
Grade
0.08
Grade Unit
%
Contained Metal
1885
Contained Unit
mlb
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade copper in a very large Indicated open-pit resource.

Evidence · table

“0.08”

Context: 1,069,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · silverTonnes: 1069000000Grade: 1.5Grade Unit: g/tContained Metal: 52.9Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:3674a16bef730047fa40
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
1069000000
Grade
1.5
Grade Unit
g/t
Contained Metal
52.9
Contained Unit
moz
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a very large Indicated open-pit resource.

Evidence · table

“1.5”

Context: 1,069,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · molybdenumTonnes: 1069000000Grade: 73Grade Unit: ppmContained Metal: 172Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:3674a16bef730047fa40
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
1069000000
Grade
73
Grade Unit
ppm
Contained Metal
172
Contained Unit
mlb
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Strong-grade molybdenum in a very large Indicated open-pit resource.

Evidence · table

“73”

Context: 1,069,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · goldTonnes: 477000000Grade: 0.53Grade Unit: g/tContained Metal: 8.1Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:59d5380a3f1b58b14f36
Deposit or zone
Sulphurets - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
477000000
Grade
0.53
Grade Unit
g/t
Contained Metal
8.1
Contained Unit
moz
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade gold in a large Indicated open-pit resource.

Evidence · table

“0.53”

Context: 477,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · copperTonnes: 477000000Grade: 0.2Grade Unit: %Contained Metal: 2103Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:59d5380a3f1b58b14f36
Deposit or zone
Sulphurets - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
477000000
Grade
0.2
Grade Unit
%
Contained Metal
2103
Contained Unit
mlb
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a large Indicated open-pit resource.

Evidence · table

“0.20”

Context: 477,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · silverTonnes: 477000000Grade: 1Grade Unit: g/tContained Metal: 15.3Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:59d5380a3f1b58b14f36
Deposit or zone
Sulphurets - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
477000000
Grade
1
Grade Unit
g/t
Contained Metal
15.3
Contained Unit
moz
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a large Indicated open-pit resource.

Evidence · table

“1.0”

Context: 477,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · molybdenumTonnes: 477000000Grade: 50Grade Unit: ppmContained Metal: 53Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:59d5380a3f1b58b14f36
Deposit or zone
Sulphurets - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
477000000
Grade
50
Grade Unit
ppm
Contained Metal
53
Contained Unit
mlb
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade molybdenum in a large Indicated open-pit resource.

Evidence · table

“50”

Context: 477,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · goldTonnes: 396000000Grade: 0.21Grade Unit: g/tContained Metal: 2.7Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:29740614b71ba1056778
Deposit or zone
Kerr - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
396000000
Grade
0.21
Grade Unit
g/t
Contained Metal
2.7
Contained Unit
moz
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade gold in a large Indicated open-pit resource.

Evidence · table

“0.21”

Context: 396,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · copperTonnes: 396000000Grade: 0.38Grade Unit: %Contained Metal: 3318Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:29740614b71ba1056778
Deposit or zone
Kerr - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
396000000
Grade
0.38
Grade Unit
%
Contained Metal
3318
Contained Unit
mlb
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Strong-grade copper in a large Indicated open-pit resource.

Evidence · table

“0.38”

Context: 396,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · silverTonnes: 396000000Grade: 1.1Grade Unit: g/tContained Metal: 14Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:29740614b71ba1056778
Deposit or zone
Kerr - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
396000000
Grade
1.1
Grade Unit
g/t
Contained Metal
14
Contained Unit
moz
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a large Indicated open-pit resource.

Evidence · table

“1.1”

Context: 396,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · molybdenumTonnes: 396000000Grade: 4Grade Unit: ppmContained Metal: 4Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:29740614b71ba1056778
Deposit or zone
Kerr - OP
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
396000000
Grade
4
Grade Unit
ppm
Contained Metal
4
Contained Unit
mlb
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade molybdenum in a large Indicated open-pit resource.

Evidence · table

“4”

Context: 396,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · goldTonnes: 31000000Grade: 0.21Grade Unit: g/tContained Metal: 0.2Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:8ae57dc03b42a6c23923
Deposit or zone
Kerr - UG
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
31000000
Grade
0.21
Grade Unit
g/t
Contained Metal
0.2
Contained Unit
moz
Cutoff Grade
20
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade gold in a small Indicated underground resource.

Evidence · table

“0.21”

Context: 31,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · copperTonnes: 31000000Grade: 0.4Grade Unit: %Contained Metal: 273Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:8ae57dc03b42a6c23923
Deposit or zone
Kerr - UG
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
31000000
Grade
0.4
Grade Unit
%
Contained Metal
273
Contained Unit
mlb
Cutoff Grade
20
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a small Indicated underground resource.

Evidence · table

“0.40”

Context: 31,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · silverTonnes: 31000000Grade: 1.5Grade Unit: g/tContained Metal: 1.5Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:8ae57dc03b42a6c23923
Deposit or zone
Kerr - UG
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
31000000
Grade
1.5
Grade Unit
g/t
Contained Metal
1.5
Contained Unit
moz
Cutoff Grade
20
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a small Indicated underground resource.

Evidence · table

“1.5”

Context: 31,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · molybdenumTonnes: 31000000Grade: 12Grade Unit: ppmContained Metal: 1Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:8ae57dc03b42a6c23923
Deposit or zone
Kerr - UG
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
31000000
Grade
12
Grade Unit
ppm
Contained Metal
1
Contained Unit
mlb
Cutoff Grade
20
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade molybdenum in a small Indicated underground resource.

Evidence · table

“12”

Context: 31,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · goldTonnes: 555000000Grade: 0.37Grade Unit: g/tContained Metal: 6.6Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:7cbe423381c9810b65e6
Deposit or zone
Iron Cap - UG
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
555000000
Grade
0.37
Grade Unit
g/t
Contained Metal
6.6
Contained Unit
moz
Cutoff Grade
18.5
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade gold in a large Indicated underground resource.

Evidence · table

“0.37”

Context: 555,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · copperTonnes: 555000000Grade: 0.2Grade Unit: %Contained Metal: 2447Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:7cbe423381c9810b65e6
Deposit or zone
Iron Cap - UG
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
555000000
Grade
0.2
Grade Unit
%
Contained Metal
2447
Contained Unit
mlb
Cutoff Grade
18.5
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a large Indicated underground resource.

Evidence · table

“0.20”

Context: 555,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · silverTonnes: 555000000Grade: 4.1Grade Unit: g/tContained Metal: 72.8Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:7cbe423381c9810b65e6
Deposit or zone
Iron Cap - UG
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
555000000
Grade
4.1
Grade Unit
g/t
Contained Metal
72.8
Contained Unit
moz
Cutoff Grade
18.5
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade silver in a large Indicated underground resource.

Evidence · table

“4.1”

Context: 555,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · molybdenumTonnes: 555000000Grade: 35Grade Unit: ppmContained Metal: 43Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:7cbe423381c9810b65e6
Deposit or zone
Iron Cap - UG
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
555000000
Grade
35
Grade Unit
ppm
Contained Metal
43
Contained Unit
mlb
Cutoff Grade
18.5
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade molybdenum in a large Indicated underground resource.

Evidence · table

“35”

Context: 555,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · goldTonnes: 4450000000Grade: 0.41Grade Unit: g/tContained Metal: 58.4Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:9e5c23d0aff1e018e002
Deposit or zone
Total Indicated
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
4450000000
Grade
0.41
Grade Unit
g/t
Contained Metal
58.4
Contained Unit
moz

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade gold in a very large Indicated resource.

Evidence · table

“0.41”

Context: 4,450,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · copperTonnes: 4450000000Grade: 0.16Grade Unit: %Contained Metal: 15534Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:9e5c23d0aff1e018e002
Deposit or zone
Total Indicated
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
4450000000
Grade
0.16
Grade Unit
%
Contained Metal
15534
Contained Unit
mlb

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a very large Indicated resource.

Evidence · table

“0.16”

Context: 4,450,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · silverTonnes: 4450000000Grade: 2.3Grade Unit: g/tContained Metal: 323.3Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:9e5c23d0aff1e018e002
Deposit or zone
Total Indicated
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
4450000000
Grade
2.3
Grade Unit
g/t
Contained Metal
323.3
Contained Unit
moz

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a very large Indicated resource.

Evidence · table

“2.3”

Context: 4,450,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · molybdenumTonnes: 4450000000Grade: 56Grade Unit: ppmContained Metal: 547Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:9e5c23d0aff1e018e002
Deposit or zone
Total Indicated
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
4450000000
Grade
56
Grade Unit
ppm
Contained Metal
547
Contained Unit
mlb

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Strong-grade molybdenum in a very large Indicated resource.

Evidence · table

“56”

Context: 4,450,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · goldTonnes: 6255000000Grade: 0.48Grade Unit: g/tContained Metal: 95.5Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:3ce7940333fbf1244e25
Deposit or zone
Total Measured + Indicated
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
6255000000
Grade
0.48
Grade Unit
g/t
Contained Metal
95.5
Contained Unit
moz

Prior Estimate

Resource Date
2026-03-30
Prior Contained Metal
88.7

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Significant increase in contained gold for the Measured and Indicated categories, driven by updated economic parameters.

Positive factors

  • contained_metal_growth

Evidence · table

“0.48”

Context: 6,255,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: 95.5 against 88.7 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · copperTonnes: 6255000000Grade: 0.15Grade Unit: %Contained Metal: 21146Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:3ce7940333fbf1244e25
Deposit or zone
Total Measured + Indicated
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
6255000000
Grade
0.15
Grade Unit
%
Contained Metal
21146
Contained Unit
mlb

Prior Estimate

Resource Date
2026-03-30
Prior Contained Metal
19646

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Significant increase in contained copper for the Measured and Indicated categories, driven by updated economic parameters.

Positive factors

  • contained_metal_growth

Evidence · table

“0.15”

Context: 6,255,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: 21146 against 19646 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · silverTonnes: 6255000000Grade: 2.3Grade Unit: g/tContained Metal: 459.9Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:3ce7940333fbf1244e25
Deposit or zone
Total Measured + Indicated
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
6255000000
Grade
2.3
Grade Unit
g/t
Contained Metal
459.9
Contained Unit
moz

Prior Estimate

Resource Date
2026-03-30
Prior Contained Metal
417.2

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Significant increase in contained silver for the Measured and Indicated categories, driven by updated economic parameters.

Positive factors

  • contained_metal_growth

Evidence · table

“2.3”

Context: 6,255,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: 459.9 against 417.2 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

indicatedKSM Project · molybdenumTonnes: 6255000000Grade: 61Grade Unit: ppmContained Metal: 837Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:3ce7940333fbf1244e25
Deposit or zone
Total Measured + Indicated
Mining method
open_pit

Resource Data

Category
indicated
Tonnes
6255000000
Grade
61
Grade Unit
ppm
Contained Metal
837
Contained Unit
mlb

Prior Estimate

Resource Date
2026-03-30
Prior Contained Metal
744

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Significant increase in contained molybdenum for the Measured and Indicated categories, driven by updated economic parameters.

Positive factors

  • contained_metal_growth

Evidence · table

“61”

Context: 6,255,000

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: 837 against 744 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · goldTonnes: 1980000000Grade: 0.26Grade Unit: g/tContained Metal: 16.6Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:baf2e1948c3bff489b32
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
1980000000
Grade
0.26
Grade Unit
g/t
Contained Metal
16.6
Contained Unit
moz
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade gold in a very large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“0.26”

Context: 1,980,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · copperTonnes: 1980000000Grade: 0.12Grade Unit: %Contained Metal: 5238Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:baf2e1948c3bff489b32
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
1980000000
Grade
0.12
Grade Unit
%
Contained Metal
5238
Contained Unit
mlb
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade copper in a very large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“0.12”

Context: 1,980,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · silverTonnes: 1980000000Grade: 2.36Grade Unit: g/tContained Metal: 150.2Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:baf2e1948c3bff489b32
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
1980000000
Grade
2.36
Grade Unit
g/t
Contained Metal
150.2
Contained Unit
moz
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a very large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“2.36”

Context: 1,980,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · molybdenumTonnes: 1980000000Grade: 45.8Grade Unit: ppmContained Metal: 200Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:baf2e1948c3bff489b32
Deposit or zone
Mitchell - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
1980000000
Grade
45.8
Grade Unit
ppm
Contained Metal
200
Contained Unit
mlb
Cutoff Grade
11.85
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade molybdenum in a very large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“45.8”

Context: 1,980,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · goldTonnes: 589000000Grade: 0.3Grade Unit: g/tContained Metal: 5.7Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:0b146ecde4c03d5978e0
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
589000000
Grade
0.3
Grade Unit
g/t
Contained Metal
5.7
Contained Unit
moz
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade gold in a large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“0.30”

Context: 589,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · copperTonnes: 589000000Grade: 0.06Grade Unit: %Contained Metal: 779Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:0b146ecde4c03d5978e0
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
589000000
Grade
0.06
Grade Unit
%
Contained Metal
779
Contained Unit
mlb
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade copper in a large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“0.06”

Context: 589,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · silverTonnes: 589000000Grade: 1.83Grade Unit: g/tContained Metal: 34.7Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:0b146ecde4c03d5978e0
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
589000000
Grade
1.83
Grade Unit
g/t
Contained Metal
34.7
Contained Unit
moz
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“1.83”

Context: 589,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · molybdenumTonnes: 589000000Grade: 58.1Grade Unit: ppmContained Metal: 75Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:0b146ecde4c03d5978e0
Deposit or zone
East Mitchell - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
589000000
Grade
58.1
Grade Unit
ppm
Contained Metal
75
Contained Unit
mlb
Cutoff Grade
12.35
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Strong-grade molybdenum in a large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“58.1”

Context: 589,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · goldTonnes: 326000000Grade: 0.39Grade Unit: g/tContained Metal: 4.1Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:aa84f18263acbaa7f575
Deposit or zone
Sulphurets - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
326000000
Grade
0.39
Grade Unit
g/t
Contained Metal
4.1
Contained Unit
moz
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade gold in a large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“0.39”

Context: 326,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · copperTonnes: 326000000Grade: 0.11Grade Unit: %Contained Metal: 791Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:aa84f18263acbaa7f575
Deposit or zone
Sulphurets - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
326000000
Grade
0.11
Grade Unit
%
Contained Metal
791
Contained Unit
mlb
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade copper in a large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“0.11”

Context: 326,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · silverTonnes: 326000000Grade: 1.35Grade Unit: g/tContained Metal: 14.1Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:aa84f18263acbaa7f575
Deposit or zone
Sulphurets - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
326000000
Grade
1.35
Grade Unit
g/t
Contained Metal
14.1
Contained Unit
moz
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“1.35”

Context: 326,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · molybdenumTonnes: 326000000Grade: 26Grade Unit: ppmContained Metal: 19Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:aa84f18263acbaa7f575
Deposit or zone
Sulphurets - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
326000000
Grade
26
Grade Unit
ppm
Contained Metal
19
Contained Unit
mlb
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade molybdenum in a large Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“26.0”

Context: 326,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · goldTonnes: 106000000Grade: 0.24Grade Unit: g/tContained Metal: 0.8Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:2b4c6bd4bbce3d706d3c
Deposit or zone
Kerr - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
106000000
Grade
0.24
Grade Unit
g/t
Contained Metal
0.8
Contained Unit
moz
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade gold in a moderate Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“0.24”

Context: 106,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · copperTonnes: 106000000Grade: 0.18Grade Unit: %Contained Metal: 421Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:2b4c6bd4bbce3d706d3c
Deposit or zone
Kerr - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
106000000
Grade
0.18
Grade Unit
%
Contained Metal
421
Contained Unit
mlb
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a moderate Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“0.18”

Context: 106,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · silverTonnes: 106000000Grade: 1.07Grade Unit: g/tContained Metal: 3.6Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:2b4c6bd4bbce3d706d3c
Deposit or zone
Kerr - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
106000000
Grade
1.07
Grade Unit
g/t
Contained Metal
3.6
Contained Unit
moz
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a moderate Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“1.07”

Context: 106,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · molybdenumTonnes: 106000000Grade: 4.9Grade Unit: ppmContained Metal: 1Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:2b4c6bd4bbce3d706d3c
Deposit or zone
Kerr - OP
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
106000000
Grade
4.9
Grade Unit
ppm
Contained Metal
1
Contained Unit
mlb
Cutoff Grade
9.9
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade molybdenum in a moderate Inferred open-pit resource.

Negative factors

  • inferred_resource

Evidence · table

“4.9”

Context: 106,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · goldTonnes: 2699000000Grade: 0.27Grade Unit: g/tContained Metal: 23.4Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:f1a63d9ffdd72f1fe6ee
Deposit or zone
Kerr - UG
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
2699000000
Grade
0.27
Grade Unit
g/t
Contained Metal
23.4
Contained Unit
moz
Cutoff Grade
20
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade gold in a very large Inferred underground resource.

Negative factors

  • inferred_resource

Evidence · table

“0.27”

Context: 2,699,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · copperTonnes: 2699000000Grade: 0.34Grade Unit: %Contained Metal: 20231Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:f1a63d9ffdd72f1fe6ee
Deposit or zone
Kerr - UG
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
2699000000
Grade
0.34
Grade Unit
%
Contained Metal
20231
Contained Unit
mlb
Cutoff Grade
20
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a very large Inferred underground resource.

Negative factors

  • inferred_resource

Evidence · table

“0.34”

Context: 2,699,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · silverTonnes: 2699000000Grade: 1.7Grade Unit: g/tContained Metal: 147.5Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:f1a63d9ffdd72f1fe6ee
Deposit or zone
Kerr - UG
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
2699000000
Grade
1.7
Grade Unit
g/t
Contained Metal
147.5
Contained Unit
moz
Cutoff Grade
20
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a very large Inferred underground resource.

Negative factors

  • inferred_resource

Evidence · table

“1.7”

Context: 2,699,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · molybdenumTonnes: 2699000000Grade: 21.1Grade Unit: ppmContained Metal: 126Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:f1a63d9ffdd72f1fe6ee
Deposit or zone
Kerr - UG
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
2699000000
Grade
21.1
Grade Unit
ppm
Contained Metal
126
Contained Unit
mlb
Cutoff Grade
20
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade molybdenum in a very large Inferred underground resource.

Negative factors

  • inferred_resource

Evidence · table

“21.1”

Context: 2,699,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · goldTonnes: 2769000000Grade: 0.38Grade Unit: g/tContained Metal: 33.8Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:2e125c98f30405d06daf
Deposit or zone
Iron Cap - UG
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
2769000000
Grade
0.38
Grade Unit
g/t
Contained Metal
33.8
Contained Unit
moz
Cutoff Grade
18.5
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade gold in a very large Inferred underground resource.

Negative factors

  • inferred_resource

Evidence · table

“0.38”

Context: 2,769,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · copperTonnes: 2769000000Grade: 0.25Grade Unit: %Contained Metal: 15262Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:2e125c98f30405d06daf
Deposit or zone
Iron Cap - UG
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
2769000000
Grade
0.25
Grade Unit
%
Contained Metal
15262
Contained Unit
mlb
Cutoff Grade
18.5
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade copper in a very large Inferred underground resource.

Negative factors

  • inferred_resource

Evidence · table

“0.25”

Context: 2,769,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · silverTonnes: 2769000000Grade: 2.47Grade Unit: g/tContained Metal: 219.9Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:2e125c98f30405d06daf
Deposit or zone
Iron Cap - UG
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
2769000000
Grade
2.47
Grade Unit
g/t
Contained Metal
219.9
Contained Unit
moz
Cutoff Grade
18.5
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Weak-grade silver in a very large Inferred underground resource.

Negative factors

  • inferred_resource

Evidence · table

“2.47”

Context: 2,769,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · molybdenumTonnes: 2769000000Grade: 30.3Grade Unit: ppmContained Metal: 185Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:2e125c98f30405d06daf
Deposit or zone
Iron Cap - UG
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
2769000000
Grade
30.3
Grade Unit
ppm
Contained Metal
185
Contained Unit
mlb
Cutoff Grade
18.5
Cutoff Unit
$/t NSR

Prior Estimate

Resource Date
2026-03-30

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Moderate-grade molybdenum in a very large Inferred underground resource.

Negative factors

  • inferred_resource

Evidence · table

“30.3”

Context: 2,769,000

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

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · goldTonnes: 8469000000Grade: 0.31Grade Unit: g/tContained Metal: 84.4Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
gold
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:804a865ab2cb42b278f3
Deposit or zone
Total Inferred
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
8469000000
Grade
0.31
Grade Unit
g/t
Contained Metal
84.4
Contained Unit
moz

Prior Estimate

Resource Date
2026-03-30
Prior Contained Metal
71.5

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Significant increase in contained gold for the Inferred category, driven by updated economic parameters.

Positive factors

  • contained_metal_growth

Negative factors

  • inferred_resource

Evidence · table

“0.31”

Context: 8,469,000

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 Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: 84.4 against 71.5 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · copperTonnes: 8469000000Grade: 0.23Grade Unit: %Contained Metal: 42722Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
copper
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:804a865ab2cb42b278f3
Deposit or zone
Total Inferred
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
8469000000
Grade
0.23
Grade Unit
%
Contained Metal
42722
Contained Unit
mlb

Prior Estimate

Resource Date
2026-03-30
Prior Contained Metal
38522

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Significant increase in contained copper for the Inferred category, driven by updated economic parameters.

Positive factors

  • contained_metal_growth

Negative factors

  • inferred_resource

Evidence · table

“0.23”

Context: 8,469,000

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 Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: 42722 against 38522 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · silverTonnes: 8469000000Grade: 2.1Grade Unit: g/tContained Metal: 570Contained Unit: mozView all details
Link to this fact

Identity

Project
KSM Project
Commodity
silver
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:804a865ab2cb42b278f3
Deposit or zone
Total Inferred
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
8469000000
Grade
2.1
Grade Unit
g/t
Contained Metal
570
Contained Unit
moz

Prior Estimate

Resource Date
2026-03-30
Prior Contained Metal
461.2

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Significant increase in contained silver for the Inferred category, driven by updated economic parameters.

Positive factors

  • contained_metal_growth

Negative factors

  • inferred_resource

Evidence · table

“2.1”

Context: 8,469,000

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 Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: 570 against 461.2 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

inferredKSM Project · molybdenumTonnes: 8469000000Grade: 32.5Grade Unit: ppmContained Metal: 606Contained Unit: mlbView all details
Link to this fact

Identity

Project
KSM Project
Commodity
molybdenum
Region
canada_bc
Reported Region
Northwest British Columbia
Ticker
SEA

Resource scope

Estimate type
resource
Effective date
2022-08-08T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Henry Kim P.Geo.
Resource group id
resource:804a865ab2cb42b278f3
Deposit or zone
Total Inferred
Mining method
open_pit

Resource Data

Category
inferred
Tonnes
8469000000
Grade
32.5
Grade Unit
ppm
Contained Metal
606
Contained Unit
mlb

Prior Estimate

Resource Date
2026-03-30
Prior Contained Metal
466

Metal Equivalent

Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2026-03-31T00:00:00.000Z

Reasoning: Significant increase in contained molybdenum for the Inferred category, driven by updated economic parameters.

Positive factors

  • contained_metal_growth

Negative factors

  • inferred_resource

Evidence · table

“32.5”

Context: 8,469,000

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 Undisclosednegative

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

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

Contained Metal Growthpositive

True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: 606 against 466 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: the release names the study this estimate supports

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.