CMC Reports on Impressive Metallurgical Tests on Potential Ore for the Gold Processing Mill in Bishop, California by North Bay Resources Inc.
Original announcement by tmx on
- Company
- CMC Metals Ltd.
- Ticker
- CMB
- Exchange
- TSX
- Region
- California
- Primary commodity
- Gold
- Secondary commodities
- Platinum, Silver
- Document categories
- Metallurgy, Other
- Extracted
- 2026-09-15 07:15:40 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
CMC Metals announced positive preliminary metallurgical results from North Bay Resources' testing of Mt. Vernon Gold Mine ore. The gravity recovery tests produced high-grade gold, platinum, and silver concentrates, marking the first known discovery of platinum at the site.
Reasoning: The testing revealed a first-known discovery of platinum at the Mt. Vernon mine with high-grade gold and platinum concentrates, significantly increasing the potential per-ton value of the ore.
Positive factors
- Discovery of platinum at Mt. Vernon
- High-grade concentrate results
- Successful gravity recovery circuit
Negative factors
- Preliminary/brevity testing scale
Facts used in scoring: 6
Classification and evidence
Free Millingpositive
Simple, clean ore amenable to standard processing without oxidation.
Why it applies: The ore was successfully processed using a basic grind and gravity recovery circuit.
Evidence · text
“viability of extraction of gold, platinum, and silver using a basic grind and gravity recovery circuit”
Bench Scale Onlynegative
Only preliminary bench tests completed — no locked-cycle or pilot work.
Why it applies: The testing is described as preliminary brevity recovery testing on run-of-mine ore.
Evidence · text
“preliminary metallurgical/brevity recovery testing”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: the document describes a flotation route ("concentrate")
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: the document describes a gravity route ("gravity")
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: 6. Some facts used in scoring do not have a stored record.
Metallurgical Results (6)
gravityMt. Vernon Gold Mine · goldHead Grade: 11.95Head Grade Unit: oz/tView all detailsHide details
Identity
- Project
- Mt. Vernon Gold Mine
- Commodity
- gold
- Region
- california
- Reported Region
- California
- Ticker
- CMB
Test Work
- Program Status
- preliminary
- Test Type
- gravity
- Processing Route
- gravity recovery table
- Sample
- Sample I.D C#1MV: gravity concentrate
Recovery
- Head Grade
- 11.95
- Head Grade Unit
- oz/t
Lab
- Laboratory
- Enviro-Chem Analytical Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2024-08-27T00:00:00.000Z
Reasoning: 11.95 oz/t gold in concentrate is an exceptionally high-grade result for a gravity circuit.
Positive factors
- High grade concentrate
Evidence · text
“Gold 11.95 oz/t”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
gravityMt. Vernon Gold Mine · platinumHead Grade: 17.54Head Grade Unit: oz/tView all detailsHide details
Identity
- Project
- Mt. Vernon Gold Mine
- Commodity
- platinum
- Region
- california
- Reported Region
- California
- Ticker
- CMB
Test Work
- Program Status
- preliminary
- Test Type
- gravity
- Processing Route
- gravity recovery table
- Sample
- Sample I.D C#1MV: gravity concentrate
Recovery
- Head Grade
- 17.54
- Head Grade Unit
- oz/t
Lab
- Laboratory
- Enviro-Chem Analytical Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2024-08-27T00:00:00.000Z
Reasoning: The discovery of platinum at this site is a significant advancement and highly novel.
Positive factors
- First known discovery of platinum at Mt. Vernon
Evidence · text
“Platinum 17.54 0z/t”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
gravityMt. Vernon Gold Mine · silverHead Grade: 7.79View all detailsHide details
Identity
- Project
- Mt. Vernon Gold Mine
- Commodity
- silver
- Region
- california
- Reported Region
- California
- Ticker
- CMB
Test Work
- Program Status
- preliminary
- Test Type
- gravity
- Processing Route
- gravity recovery table
- Sample
- Sample I.D C#1MV: gravity concentrate
Recovery
- Head Grade
- 7.79
Lab
- Laboratory
- Enviro-Chem Analytical Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2024-08-27T00:00:00.000Z
Reasoning: Silver is a standard byproduct in these concentrates.
Evidence · text
“Silver 7.79”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
gravityMt. Vernon Gold Mine · goldHead Grade: 11.38Head Grade Unit: oz/tView all detailsHide details
Identity
- Project
- Mt. Vernon Gold Mine
- Commodity
- gold
- Region
- california
- Reported Region
- California
- Ticker
- CMB
Test Work
- Program Status
- preliminary
- Test Type
- gravity
- Processing Route
- gravity recovery table
- Sample
- Sample I.D C#2MV: gravity concentrate
Recovery
- Head Grade
- 11.38
- Head Grade Unit
- oz/t
Lab
- Laboratory
- Enviro-Chem Analytical Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2024-08-27T00:00:00.000Z
Reasoning: 11.38 oz/t gold in concentrate is a strong result.
Positive factors
- High grade concentrate
Evidence · text
“Gold 11.38 oz/t”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
gravityMt. Vernon Gold Mine · platinumHead Grade: 2.2Head Grade Unit: oz/tView all detailsHide details
Identity
- Project
- Mt. Vernon Gold Mine
- Commodity
- platinum
- Region
- california
- Reported Region
- California
- Ticker
- CMB
Test Work
- Program Status
- preliminary
- Test Type
- gravity
- Processing Route
- gravity recovery table
- Sample
- Sample I.D C#2MV: gravity concentrate
Recovery
- Head Grade
- 2.2
- Head Grade Unit
- oz/t
Lab
- Laboratory
- Enviro-Chem Analytical Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2024-08-27T00:00:00.000Z
Reasoning: Confirms platinum presence in the second sample.
Positive factors
- First known discovery of platinum at Mt. Vernon
Evidence · text
“Platinum 2.20 0z/t”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
gravityMt. Vernon Gold Mine · silverHead Grade: 5.59View all detailsHide details
Identity
- Project
- Mt. Vernon Gold Mine
- Commodity
- silver
- Region
- california
- Reported Region
- California
- Ticker
- CMB
Test Work
- Program Status
- preliminary
- Test Type
- gravity
- Processing Route
- gravity recovery table
- Sample
- Sample I.D C#2MV: gravity concentrate
Recovery
- Head Grade
- 5.59
Lab
- Laboratory
- Enviro-Chem Analytical Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2024-08-27T00:00:00.000Z
Reasoning: Silver is a standard byproduct.
Evidence · text
“Silver 5.59”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
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.