Copper Fox Announces Positive Results from Schaft Creek Metallurgical Program and an Update on 2026 Program
Original announcement by tmx on
- Company
- Copper Fox Metals Inc.
- Ticker
- CUU
- Exchange
- TSX
- Region
- British Columbia
- Primary commodity
- Copper
- Secondary commodities
- Gold, Molybdenum, Silver
- Document categories
- Metallurgy
- Extracted
- 2026-09-15 18:39:14 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Copper Fox Metals reported positive metallurgical results from the Schaft Creek project, showing that molybdenum and gold recoveries can improve at a coarser grind size. While copper and silver recoveries saw a slight decrease at the coarser grind, the results support a coarser primary grind (P80 ~212 μm) to optimize mill throughput and energy consumption.
Reasoning: The metallurgical program demonstrates that a coarser grind (P80 ~210 μm) can maintain or even improve molybdenum and gold recoveries, potentially reducing comminution costs, despite a slight drop in copper and silver recoveries.
Positive factors
- comparable metal recoveries at coarser grind size
- molybdenum recovery increased with coarser grind
- gold recovery increased with coarser grind
Negative factors
- copper and silver recoveries slightly lower at coarser grind
- mineralization classified as hard to very hard
- significant variability in copper recovery across feed grades
Facts used in scoring: 4
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The metallurgical program involves flotation and comminution testing.
Evidence · text
“bulk flotation, and locked cycle portions of the metallurgical program”
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Metallurgical Results (4)
locked-cycleSchaft Creek · copperRecovery: 86 %View all detailsHide details
Identity
- Project
- Schaft Creek
- Commodity
- copper
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- CUU
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Sample
- LCT test: primary grind size 109 to 173 μm
Recovery
- Recovery
- 86 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-07-02T00:00:00.000Z
Reasoning: Copper recovery decreased slightly when the grind size was increased.
Negative factors
- recovery dropped from 89% to 86% when coarsening grind
Evidence · text
“copper recovery dropped from 89 to 86% ... when the primary grind size was increased”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
locked-cycleSchaft Creek · silverRecovery: 55 %View all detailsHide details
Identity
- Project
- Schaft Creek
- Commodity
- silver
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- CUU
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Sample
- LCT test: primary grind size 109 to 173 μm
Recovery
- Recovery
- 55 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-07-02T00:00:00.000Z
Reasoning: Silver recovery decreased when the grind size was increased.
Negative factors
- silver recovery dropped from 60% to 55% when coarsening grind
Evidence · text
“silver recovery from 60 to 55% when the primary grind size was increased”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 55% is below the weak band (75%)
locked-cycleSchaft Creek · molybdenumRecovery: 87 %View all detailsHide details
Identity
- Project
- Schaft Creek
- Commodity
- molybdenum
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- CUU
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Sample
- LCT test: primary grind size 109 to 173 μm
Recovery
- Recovery
- 87 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-07-02T00:00:00.000Z
Reasoning: Molybdenum recovery showed a significant increase at the coarser grind size.
Positive factors
- molybdenum recovery increased significantly with coarser grind
Evidence · text
“molybdenum recovery increased significantly from 71% at the finest grind size to 87% at the coarsest grind size”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
locked-cycleSchaft Creek · goldRecovery: 72 %View all detailsHide details
Identity
- Project
- Schaft Creek
- Commodity
- gold
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- CUU
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Sample
- LCT test: primary grind size 109 to 173 μm
Recovery
- Recovery
- 72 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-07-02T00:00:00.000Z
Reasoning: Gold recovery improved as the primary grind size was coarsened.
Positive factors
- gold recovery increased with coarser grind
Evidence · text
“Gold recovery increased from 67% to 72% by coarsening of the primary grind size”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 72% is below the weak band (80%)
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.