Hemlo Mining Corp. Announces Increased Mineral Resource Estimate for the Hemlo Gold Mine
Original announcement by tmx on
- Company
- Hemlo Mining Corp.
- Ticker
- HMMC
- Exchange
- TSX
- Region
- Ontario
- Primary commodity
- Gold
- Secondary commodities
- None reported
- Document categories
- Resource update
- Extracted
- 2026-09-12 06:41:03 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Hemlo Mining Corp. announced a significant update to the Mineral Resource Estimate for its Hemlo Gold Mine in Marathon, Ontario, reporting a 34% increase in Measured & Indicated (M&I) gold resources to 4.8 million ounces and a 39% increase in Inferred resources to 0.9 million ounces. This growth is attributed to additional drilling, geological reinterpretation, and updated economic assumptions, including a higher gold price and lower cut-off grades. The company is undertaking a 130,000-meter drill program to further expand and convert resources, with a comprehensive update targeted for late 2027.
Reasoning: Hemlo Mining Corp. announced a substantial increase in both M&I and Inferred gold resources at its Hemlo Gold Mine, driven by additional drilling, geological reinterpretation, and updated economic assumptions. The M&I resource now stands at 4.8 Moz Au, representing a 34% increase, while Inferred resources grew by 39% to 0.9 Moz Au. The update highlights the project's significant growth potential and is supported by ongoing exploration and conversion drilling, although some growth is attributed to higher gold price assumptions and lower cut-off grades.
Positive factors
- Significant increase in Measured & Indicated (M&I) contained gold ounces (+34%)
- Significant increase in Inferred contained gold ounces (+39%)
- High confidence in M&I resource (96.9 Mt at 1.55 g/t Au for 4.8 Moz Au)
- Resource estimate prepared to NI 43-101 standards and signed off by Qualified Persons
- Ongoing 130,000-meter drill program targeting resource conversion and expansion
- Identification of new mineralized zones (A-Zone) and extensions (E-Zone, B-Zone Deep, South Rim Zone)
Negative factors
- Increase in resource partially driven by higher gold price assumption ($2,500/oz vs $1,900/oz previously)
- Increase in resource partially driven by application of lower cut-off grades
- Open Pit Inferred contained metal decreased by 17% compared to the prior estimate
Facts used in scoring: 14
Classification and evidence
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: The resource estimate includes a Measured category, which is the highest confidence category for mineral resources.
Evidence · text
“Measured & Indicated ("M&I") Mineral Resources (100% basis) of 96.9 million tonnes ("Mt") at 1.55 grams per tonne ("g/t") Au for 4.8 million ounces ("Moz") of gold ("Au")”
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: The resource estimate includes a significant Indicated category, which provides reasonable geological confidence.
Evidence · text
“Measured & Indicated ("M&I") Mineral Resources (100% basis) of 96.9 million tonnes ("Mt") at 1.55 grams per tonne ("g/t") Au for 4.8 million ounces ("Moz") of gold ("Au")”
Contained Metal Growthpositive
True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.
Why it applies: The Measured & Indicated contained gold ounces increased by 34% (1.2 Moz) and Inferred contained gold ounces increased by 39% (0.24 Moz) compared to the 2025 Report.
Evidence · text
“represents an increase of 1.2 Moz, or +34%, compared to the 2025 Report.”
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: The mineral resource estimate was prepared under the supervision of Mr. Brian Hartman (P. Geo.) and reviewed by Dr. Raphael Dutaut, both Qualified Persons as defined by NI 43-101.
Evidence · text
“The qualified person ("QP") responsible for this Mineral Resource Estimate is Mr. Brian Hartman (P. Geo.) of SLR Consulting (Canada) Ltd.”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The MRE was prepared in accordance with NI 43-101 standards.
Evidence · text
“The MRE was prepared in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") Standards on Mineral Resources and Mineral Reserves, adopted by the CIM Council, as amended.”
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The estimate includes a significant Inferred resource component, which is a speculative category with lower geological confidence.
Evidence · text
“Inferred Mineral Resources (100% basis) of 12.1 Mt at 2.22 g/t Au for 0.9 Moz Au”
Cut-off Lowerednegative
Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.
Why it applies: The resource increase is partly due to the application of lower cut-off grades, which can inflate tonnage at the expense of grade.
Evidence · text
“application of lower cut-off grades, which have defined larger, more continuous mining areas.”
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: This document announces an updated Mineral Resource Estimate for an existing mine.
Evidence · text
“Hemlo Mining Corp. Announces Increased Mineral Resource Estimate for the Hemlo Gold Mine”
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: The MRE is a milestone towards a comprehensive MRMR update and Technical Report targeted for the second half of 2027, which typically supports feasibility studies.
Evidence · text
“The MRE represents an important milestone toward a comprehensive MRMR update and Technical Report targeted for the second half of 2027.”
Extracted facts
Stored fact records: 14. Some facts used in scoring do not have a stored record.
Resource Estimates (14)
indicatedHemlo Gold Mine · goldTonnes: 71923000Grade: 0.87Grade Unit: g/tContained Metal: 2009Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:074c55608062f5186dd6
- Deposit or zone
- Open Pit
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- indicated
- Tonnes
- 71923000
- Grade
- 0.87
- Grade Unit
- g/t
- Contained Metal
- 2009
- Contained Unit
- koz
- Cutoff Grade
- 0.28
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The Open Pit Indicated resource shows a substantial contained metal of 2.0 Moz Au at an economic grade of 0.87 g/t Au, representing a 25% increase from the previous estimate, which is a strong positive for the project.
Positive factors
- Large tonnage and contained metal in the Indicated category for open pit mining
- Grade of 0.87 g/t Au is economic for open pit gold deposits
- Contained metal increased by 25% compared to the prior estimate
Negative factors
- Resource increase partially driven by higher gold price assumption and lower cut-off grade
Evidence · table
“71,923”
Context: Open Pit
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
measuredHemlo Gold Mine · goldTonnes: 5095000Grade: 3.4Grade Unit: g/tContained Metal: 557Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:c35fb3ac575f30845a40
- Deposit or zone
- Underground (ex. Interlake)
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- measured
- Tonnes
- 5095000
- Grade
- 3.4
- Grade Unit
- g/t
- Contained Metal
- 557
- Contained Unit
- koz
- Cutoff Grade
- 1.8
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The Measured resource for the Underground (ex. Interlake) zone shows a high-grade of 3.40 g/t Au, providing high confidence for future mine planning, though the contained metal is moderate.
Positive factors
- High-grade Measured resource for underground mining
- Measured category provides high confidence in geological continuity
Negative factors
- Contained metal is moderate for a Measured resource
Evidence · table
“5,095”
Context: Underground (ex. Interlake)
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
indicatedHemlo Gold Mine · goldTonnes: 13676000Grade: 3.42Grade Unit: g/tContained Metal: 1502Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:5a3670ee579dfe26186f
- Deposit or zone
- Underground (ex. Interlake)
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- indicated
- Tonnes
- 13676000
- Grade
- 3.42
- Grade Unit
- g/t
- Contained Metal
- 1502
- Contained Unit
- koz
- Cutoff Grade
- 1.8
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The Indicated resource for the Underground (ex. Interlake) zone is high-grade at 3.42 g/t Au with strong contained metal, contributing significantly to the overall underground resource growth.
Positive factors
- High-grade Indicated resource for underground mining
- Significant contained metal of 1.5 Moz Au in the Indicated category
- Contained metal for total underground M&I increased by 40% compared to the prior estimate
Negative factors
- Resource increase partially driven by higher gold price assumption and lower cut-off grade
Evidence · table
“13,676”
Context: Underground (ex. Interlake)
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
measuredHemlo Gold Mine · goldTonnes: 2085000Grade: 4.1Grade Unit: g/tContained Metal: 275Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:14610b962ff96bfe7f5d
- Deposit or zone
- Interlake Claims
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- measured
- Tonnes
- 2085000
- Grade
- 4.1
- Grade Unit
- g/t
- Contained Metal
- 275
- Contained Unit
- koz
- Cutoff Grade
- 1.8
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The Interlake Claims show a high-grade Measured resource of 4.10 g/t Au, adding high-confidence ounces to the overall resource base.
Positive factors
- High-grade Measured resource for underground mining
- Measured category provides high confidence in geological continuity
Evidence · table
“2,085”
Context: Interlake Claims
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
indicatedHemlo Gold Mine · goldTonnes: 4087000Grade: 3.8Grade Unit: g/tContained Metal: 499Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:465b57435ae27c4d2b83
- Deposit or zone
- Interlake Claims
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- indicated
- Tonnes
- 4087000
- Grade
- 3.8
- Grade Unit
- g/t
- Contained Metal
- 499
- Contained Unit
- koz
- Cutoff Grade
- 1.8
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The Indicated resource for the Interlake Claims is high-grade at 3.80 g/t Au, contributing to the overall underground resource.
Positive factors
- High-grade Indicated resource for underground mining
Evidence · table
“4,087”
Context: Interlake Claims
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
measuredHemlo Gold Mine · goldTonnes: 6137000Grade: 3.52Grade Unit: g/tContained Metal: 694Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:05aa3027ca8fff77becb
- Deposit or zone
- Total Attributable
- Mining method
- combined
- Resource basis
- attributable
Resource Data
- Category
- measured
- Tonnes
- 6137000
- Grade
- 3.52
- Grade Unit
- g/t
- Contained Metal
- 694
- Contained Unit
- koz
- Cutoff Grade
- 1.8
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The attributable Measured resource maintains a high grade of 3.52 g/t Au, providing a solid, high-confidence base for the project.
Positive factors
- High-grade attributable Measured resource
Evidence · table
“6,137”
Context: Total Attributable
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
indicatedHemlo Gold Mine · goldTonnes: 87643000Grade: 1.33Grade Unit: g/tContained Metal: 3760Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:f569f04b57e4e70515e0
- Deposit or zone
- Total Attributable
- Mining method
- combined
- Resource basis
- attributable
Resource Data
- Category
- indicated
- Tonnes
- 87643000
- Grade
- 1.33
- Grade Unit
- g/t
- Contained Metal
- 3760
- Contained Unit
- koz
- Cutoff Grade
- 0.28
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The attributable Indicated resource shows a substantial contained metal of 3.76 Moz Au, contributing significantly to the overall project value.
Positive factors
- Significant attributable Indicated contained metal of 3.76 Moz Au
Negative factors
- Resource increase partially driven by higher gold price assumption and lower cut-off grade
Evidence · table
“87,643”
Context: Total Attributable
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
inferredHemlo Gold Mine · goldTonnes: 3988000Grade: 0.57Grade Unit: g/tContained Metal: 73Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:39f4375200d3acffc935
- Deposit or zone
- Open Pit
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- inferred
- Tonnes
- 3988000
- Grade
- 0.57
- Grade Unit
- g/t
- Contained Metal
- 73
- Contained Unit
- koz
- Cutoff Grade
- 0.28
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
- Prior Contained Metal
- 120
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The Open Pit Inferred resource saw a 17% decrease in contained metal, indicating a reduction in this category despite overall resource growth, and the grade is marginal for open pit mining.
Positive factors
- Identification of new mineralized zones (A-Zone) contributing to inferred resource
Negative factors
- Contained metal decreased by 17% compared to the prior estimate
- Grade of 0.57 g/t Au is marginal for open pit gold deposits
- Resource increase partially driven by higher gold price assumption and lower cut-off grade
Evidence · table
“3,988”
Context: Open Pit
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
Contained Metal Declinenegative
Contained metal decreased vs prior despite tonnage growth — grade dilution exceeds volume gain.
Why it applies: 73 against 120 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
inferredHemlo Gold Mine · goldTonnes: 5810000Grade: 2.81Grade Unit: g/tContained Metal: 525Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:80f0f30da3246a237cd9
- Deposit or zone
- Underground (ex. Interlake)
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- inferred
- Tonnes
- 5810000
- Grade
- 2.81
- Grade Unit
- g/t
- Contained Metal
- 525
- Contained Unit
- koz
- Cutoff Grade
- 1.8
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
- Prior Contained Metal
- 540
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The Underground (ex. Interlake) Inferred resource is high-grade at 2.81 g/t Au, contributing to the overall underground resource growth, though it remains in the lower confidence category.
Positive factors
- High-grade Inferred resource for underground mining
- Contained metal for total underground Inferred increased by 48% compared to the prior estimate
Negative factors
- Inferred category has lower geological confidence
- Resource increase partially driven by higher gold price assumption and lower cut-off grade
Evidence · table
“5,810”
Context: Underground (ex. Interlake)
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
Contained Metal Declinenegative
Contained metal decreased vs prior despite tonnage growth — grade dilution exceeds volume gain.
Why it applies: 525 against 540 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
inferredHemlo Gold Mine · goldTonnes: 2330000Grade: 3.58Grade Unit: g/tContained Metal: 268Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:c32606f3a9a3d716ac12
- Deposit or zone
- Interlake Claims
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- inferred
- Tonnes
- 2330000
- Grade
- 3.58
- Grade Unit
- g/t
- Contained Metal
- 268
- Contained Unit
- koz
- Cutoff Grade
- 1.8
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The Interlake Claims Inferred resource is high-grade at 3.58 g/t Au, adding to the overall resource potential, but with lower confidence due to its category.
Positive factors
- High-grade Inferred resource for underground mining
Negative factors
- Inferred category has lower geological confidence
Evidence · table
“2,330”
Context: Interlake Claims
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
inferredHemlo Gold Mine · goldTonnes: 10963000Grade: 2.08Grade Unit: g/tContained Metal: 732Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:a39af53c4715cdb8c5d2
- Deposit or zone
- Total Attributable
- Mining method
- combined
- Resource basis
- attributable
Resource Data
- Category
- inferred
- Tonnes
- 10963000
- Grade
- 2.08
- Grade Unit
- g/t
- Contained Metal
- 732
- Contained Unit
- koz
- Cutoff Grade
- 0.28
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The attributable Inferred resource provides significant ounces at a good grade, indicating future potential, but its Inferred classification means lower confidence.
Positive factors
- Significant attributable Inferred contained metal of 0.732 Moz Au
Negative factors
- Inferred category has lower geological confidence
- Resource increase partially driven by higher gold price assumption and lower cut-off grade
Evidence · table
“10,963”
Context: Total Attributable
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
indicatedHemlo Gold Mine · goldTonnes: 89686000Grade: 1.39Grade Unit: g/tContained Metal: 4009Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:8229d4f7dd57a3e1a8d7
- Deposit or zone
- Total
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- indicated
- Tonnes
- 89686000
- Grade
- 1.39
- Grade Unit
- g/t
- Contained Metal
- 4009
- Contained Unit
- koz
- Cutoff Grade
- 0.28
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
- Prior Contained Metal
- 3580
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The total Indicated resource shows a strong contained metal of 4.0 Moz Au, contributing to the overall M&I growth and indicating significant potential.
Positive factors
- Significant contained metal of 4.0 Moz Au in the Indicated category
- Total M&I contained metal increased by 34% compared to the prior estimate
Negative factors
- Resource increase partially driven by higher gold price assumption and lower cut-off grade
Evidence · table
“89,686”
Context: Total
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
Contained Metal Growthpositive
True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.
Why it applies: 4009 against 3580 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
measuredHemlo Gold Mine · goldTonnes: 7180000Grade: 3.6Grade Unit: g/tContained Metal: 832Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:3ab7a4135f231f86c452
- Deposit or zone
- Total
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- measured
- Tonnes
- 7180000
- Grade
- 3.6
- Grade Unit
- g/t
- Contained Metal
- 832
- Contained Unit
- koz
- Cutoff Grade
- 1.8
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The total Measured resource is high-grade at 3.60 g/t Au, providing a high-confidence component to the overall resource.
Positive factors
- High-grade Measured resource provides high confidence
Evidence · table
“7,180”
Context: Total
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
inferredHemlo Gold Mine · goldTonnes: 12128000Grade: 2.22Grade Unit: g/tContained Metal: 866Contained Unit: kozView all detailsHide details
Identity
- Project
- Hemlo Gold Mine
- Commodity
- gold
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- HMMC
Resource scope
- Estimate type
- resource
- Effective date
- 2025-12-31T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Brian Hartman, Raphael Dutaut
- Resource group id
- resource:437d9d7eb6644566d491
- Deposit or zone
- Total
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- inferred
- Tonnes
- 12128000
- Grade
- 2.22
- Grade Unit
- g/t
- Contained Metal
- 866
- Contained Unit
- koz
- Cutoff Grade
- 0.28
- Cutoff Unit
- g/t Au
Prior Estimate
- Resource Date
- 2025-12-31
- Prior Contained Metal
- 658
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: The total Inferred resource shows a high grade and significant contained metal, indicating strong exploration potential, but its lower confidence category warrants caution.
Positive factors
- High-grade Inferred resource with significant contained metal
- Total Inferred contained metal increased by 39% compared to the prior estimate
Negative factors
- Inferred category has lower geological confidence
- Resource increase partially driven by higher gold price assumption and lower cut-off grade
Evidence · table
“12,128”
Context: Total
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
Contained Metal Growthpositive
True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.
Why it applies: 866 against 658 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
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.