1911 Gold Reports Positive Metallurgical Results of 93.7% for True North and 96.3% for Ogama-Rockland
Original announcement by tmx on
- Company
- 1911 Gold Corporation
- Ticker
- AUMB
- Exchange
- TSX
- Region
- Manitoba, Canada
- Primary commodity
- Gold
- Secondary commodities
- None reported
- Document categories
- Metallurgy
- Extracted
- 2026-09-17 10:27:42 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
1911 Gold reported positive metallurgical test results for its True North and Ogama-Rockland gold projects in Manitoba, Canada. The True North project achieved average gold recoveries of 93.7% from a 1.82 g/t Au sample, while preliminary test work for Ogama-Rockland yielded 96.3% gold recovery from a 4.65 g/t Au sample. Both projects demonstrated amenability to conventional gravity-flotation-leach processing with moderate reagent consumption and no deleterious elements, supporting future development plans.
Reasoning: The document reports high gold recoveries for both True North (93.7%) and Ogama-Rockland (96.3%) projects using conventional gravity-flotation-leach flowsheets, with moderate reagent consumption and no deleterious elements, confirming the amenability of the ore to processing. However, further variability testing is needed, and the True North sample grade is below the PEA cut-off.
Positive factors
- High gold recoveries achieved for both projects (93.7% for True North, 96.3% for Ogama-Rockland)
- Conventional gravity-flotation-leach flowsheet is effective
- Moderate to low reagent consumption
- No acid-generating or deleterious metal leaching potential identified
- QP/CP signed off on the results from a certified laboratory
Negative factors
- Test work is preliminary for Ogama-Rockland, and further variability testing is required for both projects
- True North sample head grade (1.82 g/t Au) is lower than the PEA cut-off grade (2.75 g/t Au), raising questions about representativeness of future mill feed
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 14
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: the document describes a mill_cil route ("concentrator")
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: the document describes a gravity route ("gravity")
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 3 distinct composites were tested
Extracted facts
Stored fact records: 14. Some facts used in scoring do not have a stored record.
Metallurgical Results (14)
bench scaleTrue North Gold Project · goldRecovery: 93.7 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- 130 kilogram sample from L10 Zone on Level 16
- Leach Time
- 48 hours
Recovery
- Recovery
- 93.7 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Reagent Notes
- moderate to low reagent consumption; Bond ball mill work index measured 14.1 kWh/t; no acid-generating and deleterious metal leaching potential
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: The average total gold recovery of 93.7% for True North is very high and confirms the amenability of the ore to conventional processing, with favorable comminution and environmental characteristics. However, the sample grade is below the PEA cut-off.
Positive factors
- High average gold recovery for the True North project
- Conventional processing route confirmed
- Moderate reagent consumption and no deleterious elements
Negative factors
- Average result, not a single test condition
- Sample head grade (1.82 g/t Au) is below the PEA cut-off grade (2.75 g/t Au)
Evidence · text
“Total Au recoveries averaging 93.7 percent”
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Average total gold recovery of 93.7% is at the exceptional band for gold mill/CIL processing.
Evidence · text
“Total Au recoveries averaging 93.7 percent”
Free Millingpositive
Simple, clean ore amenable to standard processing without oxidation.
Why it applies: The test work indicated no acid-generating potential and no measurable deleterious metal leaching potential.
Evidence · text
“no acid-generating and deleterious metal leaching potential”
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 91.8 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T10 (from T4)
- Grind P80
- 147 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 91.8 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 1.6 kg/t
- Lime
- 2.8 kg/t
- Reagent Notes
- NaCN 2000 ppm, pH 10.5
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T10 for True North achieved a high total gold recovery of 91.8% with a primary grind of 147 µm and regrind to 21 µm, demonstrating effective processing.
Positive factors
- High gold recovery for this specific test condition
- Conventional processing route
Evidence · table
“91.8 %”
Context: T10
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 91.8% is strong for gold mill/CIL processing.
Evidence · table
“91.8 %”
Context: T10
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 85.5 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T11 (from T4, no regrind)
- Grind P80
- 147 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 85.5 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 2 kg/t
- Lime
- 1.5 kg/t
- Reagent Notes
- NaCN 2000 ppm, pH 10.5
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T11 for True North achieved a total gold recovery of 85.5% without regrinding the flotation concentrate, indicating the benefit of regrinding for improved recovery.
Positive factors
- Conventional processing route
Negative factors
- Lower recovery compared to reground tests
Evidence · table
“85.5 %”
Context: T11
Tags used in scoring
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 93.8 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T12 (from T6)
- Grind P80
- 112 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 93.8 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 1.9 kg/t
- Lime
- 1.3 kg/t
- Reagent Notes
- NaCN 2000 ppm, pH 10.5
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T12 for True North achieved a very high total gold recovery of 93.8% with a primary grind of 112 µm and regrind to 22 µm, indicating excellent metallurgical performance.
Positive factors
- Very high gold recovery for this specific test condition
- Conventional processing route
Evidence · table
“93.8 %”
Context: T12
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 93.8% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“93.8 %”
Context: T12
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 88.3 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T13 (from T6, no regrind)
- Grind P80
- 112 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 88.3 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 1.9 kg/t
- Lime
- 1.3 kg/t
- Reagent Notes
- NaCN 2000 ppm, pH 10.5
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T13 for True North achieved a total gold recovery of 88.3% without regrinding the flotation concentrate, indicating the benefit of regrinding for improved recovery.
Positive factors
- Conventional processing route
Negative factors
- Lower recovery compared to reground tests
Evidence · table
“88.3 %”
Context: T13
Tags used in scoring
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 92.8 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T22 (from T6)
- Grind P80
- 112 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 92.8 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 0.7 kg/t
- Lime
- 1.7 kg/t
- Reagent Notes
- NaCN 1000 ppm, pH 10.5
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T22 for True North achieved a high total gold recovery of 92.8% with a primary grind of 112 µm and regrind to 21 µm, notably with reduced NaCN levels, indicating potential for cost optimization.
Positive factors
- High gold recovery with reduced cyanide consumption
- Conventional processing route
Evidence · table
“92.8 %”
Context: T22
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 92.8% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“92.8 %”
Context: T22
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 93.8 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T23 (from T6)
- Grind P80
- 112 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 93.8 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 0.9 kg/t
- Lime
- 7.5 kg/t
- Reagent Notes
- NaCN 1000 ppm, pH 12.0
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T23 for True North achieved a very high total gold recovery of 93.8% with a primary grind of 112 µm and regrind to 22 µm, using reduced NaCN but higher lime consumption at an elevated pH.
Positive factors
- Very high gold recovery with reduced cyanide consumption
- Conventional processing route
Negative factors
- Higher lime consumption at elevated pH
Evidence · table
“93.8 %”
Context: T23
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 93.8% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“93.8 %”
Context: T23
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 94 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T24 (from T6)
- Grind P80
- 112 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 94 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 1.1 kg/t
- Lime
- 1.7 kg/t
- Reagent Notes
- NaCN 1000 ppm, pH 10.5, Oxygen sparging
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T24 for True North achieved a very high total gold recovery of 94.0% with a primary grind of 112 µm and regrind to 21 µm, using reduced NaCN and oxygen sparging.
Positive factors
- Very high gold recovery with reduced cyanide consumption
- Conventional processing route
Evidence · table
“94.0 %”
Context: T24
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 94.0% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“94.0 %”
Context: T24
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 93.6 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T25 (from T6, larger mass pull)
- Grind P80
- 112 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 93.6 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 1 kg/t
- Lime
- 1.3 kg/t
- Reagent Notes
- NaCN 1000 ppm, pH 10.5, Larger mass pull
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T25 for True North achieved a very high total gold recovery of 93.6% with a primary grind of 112 µm and regrind to 24 µm, using reduced NaCN and a larger mass pull, though the latter did not improve recovery.
Positive factors
- Very high gold recovery with reduced cyanide consumption
- Conventional processing route
Negative factors
- Larger mass pull did not appear to improve recoveries
Evidence · table
“93.6 %”
Context: T25
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 93.6% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“93.6 %”
Context: T25
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 93.7 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T26 (from T6, larger mass pull)
- Grind P80
- 112 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 93.7 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 0.5 kg/t
- Lime
- 8.3 kg/t
- Reagent Notes
- NaCN 1000 ppm, pH 12.0, Larger mass pull
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T26 for True North achieved a very high total gold recovery of 93.7% with a primary grind of 112 µm and regrind to 23 µm, using very low NaCN but higher lime consumption at an elevated pH.
Positive factors
- Very high gold recovery with very low cyanide consumption
- Conventional processing route
Negative factors
- Higher lime consumption at elevated pH
- Larger mass pull did not appear to improve recoveries
Evidence · table
“93.7 %”
Context: T26
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 93.7% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“93.7 %”
Context: T26
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 93.4 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T27 (from T6, larger mass pull)
- Grind P80
- 112 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 93.4 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 1 kg/t
- Lime
- 1.2 kg/t
- Reagent Notes
- NaCN 1000 ppm, pH 10.5, Larger mass pull
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T27 for True North achieved a very high total gold recovery of 93.4% with a primary grind of 112 µm and regrind to 26 µm, using reduced NaCN and a larger mass pull, though the latter did not improve recovery.
Positive factors
- Very high gold recovery with reduced cyanide consumption
- Conventional processing route
Negative factors
- Larger mass pull did not appear to improve recoveries
Evidence · table
“93.4 %”
Context: T27
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 93.4% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“93.4 %”
Context: T27
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 94.5 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T14 (from T8)
- Grind P80
- 87 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 94.5 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 1.8 kg/t
- Lime
- 1.2 kg/t
- Reagent Notes
- NaCN 2000 ppm, pH 10.5
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T14 for True North achieved a very high total gold recovery of 94.5% with a primary grind of 87 µm and regrind to 21 µm, indicating excellent metallurgical performance at a finer primary grind.
Positive factors
- Very high gold recovery for this specific test condition
- Conventional processing route
Evidence · table
“94.5 %”
Context: T14
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 94.5% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“94.5 %”
Context: T14
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleTrue North Gold Project · goldRecovery: 96.3 %Head Grade: 1.82Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- True North Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- optimization
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Leach
- Sample
- True North composite, Test T15 (from T8, no regrind)
- Grind P80
- 87 µm
- Leach Time
- 48 hours
Recovery
- Recovery
- 96.3 %
- Recovery Basis
- actual_test
- Head Grade
- 1.82
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 1.7 kg/t
- Lime
- 1 kg/t
- Reagent Notes
- NaCN 2000 ppm, pH 10.5
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Test T15 for True North achieved an exceptional total gold recovery of 96.3% with a primary grind of 87 µm without regrinding the flotation concentrate, indicating very good metallurgical performance at a finer primary grind.
Positive factors
- Exceptional gold recovery for this specific test condition
- Conventional processing route
Evidence · table
“96.3 %”
Context: T15
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total recovery of 96.3% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“96.3 %”
Context: T15
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single 130 kg sample from the L10 Zone, and further variability testing is noted as required.
Evidence · text
“A 130 kg sample was collected from the L10 Zone located on Level 16 (-720 m)”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation Test Work”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
bench scaleOgama-Rockland Gold Project · goldRecovery: 96.3 %Head Grade: 4.65Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Ogama-Rockland Gold Project
- Commodity
- gold
- Region
- canada_mb
- Reported Region
- Manitoba, Canada
- Ticker
- AUMB
Test Work
- Program Status
- preliminary
- Test Type
- bench scale
- Processing Route
- Gravity-Flotation-Regrind-Leach
- Sample
- representative composite sample from fresh quartered drill core
- Grind P80
- 101 µm
- Leach Time
- 72 hours
Recovery
- Recovery
- 96.3 %
- Recovery Basis
- actual_test
- Head Grade
- 4.65
- Head Grade Unit
- g/t
Reagents
- Cyanide
- 6.4 kg/t
- Lime
- 1.7 kg/t
- Reagent Notes
- pH 10.5; moderate to low reagent consumption; Assumes 100% of gravity gold is recovered
Lab
- Laboratory
- ALS Canada Ltd. (Metallurgy Services), Kamloops, Canada
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-20T00:00:00.000Z
Reasoning: Preliminary test work for Ogama-Rockland achieved an exceptional 96.3% gold recovery from a high-grade sample using a conventional gravity-flotation-leach flowsheet, confirming the clean nature of the material. However, the preliminary nature and an assumption in the recovery calculation reduce confidence slightly.
Positive factors
- Exceptional gold recovery for Ogama-Rockland
- Conventional processing route confirmed
- High head grade of the sample
Negative factors
- Test work is preliminary and further work is required
- Assumption of 100% gravity gold recovery
Evidence · table
“96.3 %”
Context: 7885-03
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Total gold recovery of 96.3% is at the exceptional band for gold mill/CIL processing.
Evidence · table
“96.3 %”
Context: 7885-03
Bench Scale Onlynegative
Only preliminary bench tests completed — no locked-cycle or pilot work.
Why it applies: The document explicitly states this is 'preliminary metallurgical test work'.
Evidence · text
“Preliminary metallurgical test work on a composite sample”
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: The test work was conducted on a single composite sample, and further variability testing is noted as required.
Evidence · text
“representative composite sample from fresh quartered drill core”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route involves gravity concentration, flotation, and cyanide leaching, which are typical mill processes.
Evidence · text
“Gravity-Flotation-Regrind-Leach flowsheet”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
QP/CP SignedRejected · positive · Story-specific tag
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.
Reason: The news release states that the scientific and technical information has been reviewed and approved by Qualified Persons Michele Della Libera and Roselyn Yeboah.
Evidence · text
“The scientific and technical information in this news release has been reviewed and approved by Michele Della Libera, P.Geo., V.P. Exploration, and Roselyn Yeboah, P.Eng., Senior Metallurgist, of 1911 Gold Corporation, who are “Qualified Persons” as defined under NI 43-101.”
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.