EDM Announces Successful Results of Dense Media Separation Study on High-Grade Ores of the Scotia Mine
Original announcement by tmx on
- Company
- EDM Resources Inc.
- Ticker
- EDM
- Exchange
- TSX
- Region
- Nova Scotia
- Primary commodity
- Zinc
- Secondary commodities
- Lead
- Document categories
- Metallurgy
- Extracted
- 2026-09-19 21:15:00 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
EDM Resources Inc. announced successful initial bench-scale Heavy Liquid Separation (HLS) test results for high-grade zinc and lead composite samples from its Scotia Mine. The tests demonstrated high recoveries, with 97.3-97.6% for zinc and 99.4% for lead, indicating a strong separation of mineralized material. These results suggest that Dense Media Separation (DMS) could significantly reduce overall processing costs by pre-concentrating ore prior to flotation.
Reasoning: The document reports successful initial bench-scale metallurgical test results for zinc and lead from the Scotia Mine, showing high recoveries and potential for significant cost reduction through pre-concentration. This is a positive development for the project's economics, though it is still at an early test stage.
Positive factors
- High recoveries for both zinc and lead achieved through HLS test work, indicating strong separation of mineralized material.
- The test work suggests potential for significant reduction in overall processing costs at the Scotia Mine by pre-concentrating high-grade material.
- Successful bench-scale HLS tests simulate full-scale DMS, a proven and cost-efficient method.
Negative factors
- The test work is currently at bench-scale (HLS), and full-scale DMS plant performance may vary.
- The results are from initial tests on high-grade composite samples, and variability across the deposit is not fully addressed in this release.
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 4
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: The HLS tests achieved zinc recoveries of 97.3% and 97.6%, and lead recoveries of 99.4% for both tests, which are well above the exceptional band for base metals.
Evidence · text
“retaining 97.3% of the Zinc and 99.4% of the Lead”
Bench Scale Onlynegative
Only preliminary bench tests completed — no locked-cycle or pilot work.
Why it applies: The tests conducted were Heavy Liquid Separation (HLS), which is explicitly stated as a bench-scale process used to simulate full-scale DMS.
Evidence · text
“HLS testing is a bench-scale process that is used to simulate the full-scale DMS process.”
QP/CP Signedpositive · 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.
Why it applies: Mr. Curtis Mohns, P.Eng., Senior Metallurgist for SGS Laboratories and a Qualified Person as defined under NI43-101, approved the technical information.
Evidence · text
“Mr. Curtis Mohns, P.Eng., Senior Metallurgist for SGS Laboratories and a Qualified Person as defined under NI43-101, has approved the technical information contained in this news release related to the HLS test work.”
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")
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)
HLSScotia Mine · zincRecovery: 97.3 %Head Grade: 19.5Head Grade Unit: %View all detailsHide details
Identity
- Project
- Scotia Mine
- Commodity
- zinc
- Region
- canada_ns
- Reported Region
- Nova Scotia
- Ticker
- EDM
Test Work
- Program Status
- preliminary
- Test Type
- HLS
- Processing Route
- Dense Media Separation
- Sample
- Test T1 (12.7mm crushed size) high-grade composite
- Grind P80
- 12700 µm
Recovery
- Recovery
- 97.3 %
- Recovery Basis
- actual_test
- Head Grade
- 19.5
- Head Grade Unit
- %
- Conc. Grade
- 24.8
- Conc. Grade Unit
- %
- Mass Pull
- 76.5 %
Lab
- Laboratory
- SGS Laboratories
- Consultant
- SGS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-01-06T00:00:00.000Z
Reasoning: The zinc recovery of 97.3% for Test T1 is exceptional for a pre-concentration step, demonstrating strong separation efficiency and a significant grade increase. This is a highly positive result for the project's potential economics.
Positive factors
- Exceptional zinc recovery of 97.3% achieved at bench-scale.
- Significant upgrade in zinc grade from 19.5% to 24.8% while maintaining high recovery.
- Mass pull of 76.5% indicates efficient pre-concentration.
Negative factors
- Results are from bench-scale HLS tests, which may not fully translate to commercial-scale DMS performance.
- Test was conducted on a high-grade composite sample, and variability across the deposit is not yet fully understood.
Evidence · text
“Test T1 (12.7mm crushed size): increase in grades by 35% for Zinc and 26% for Lead while retaining 97.3% of the Zinc and 99.4% of the Lead”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
HLSScotia Mine · leadRecovery: 99.4 %Head Grade: 35.7Head Grade Unit: %View all detailsHide details
Identity
- Project
- Scotia Mine
- Commodity
- lead
- Region
- canada_ns
- Reported Region
- Nova Scotia
- Ticker
- EDM
Test Work
- Program Status
- preliminary
- Test Type
- HLS
- Processing Route
- Dense Media Separation
- Sample
- Test T1 (12.7mm crushed size) high-grade composite
- Grind P80
- 12700 µm
Recovery
- Recovery
- 99.4 %
- Recovery Basis
- actual_test
- Head Grade
- 35.7
- Head Grade Unit
- %
- Conc. Grade
- 46.4
- Conc. Grade Unit
- %
- Mass Pull
- 76.5 %
Lab
- Laboratory
- SGS Laboratories
- Consultant
- SGS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-01-06T00:00:00.000Z
Reasoning: The lead recovery of 99.4% for Test T1 is outstanding for a pre-concentration step, demonstrating excellent separation efficiency and a substantial grade increase. This is a highly positive result for the project's potential economics.
Positive factors
- Exceptional lead recovery of 99.4% achieved at bench-scale.
- Significant upgrade in lead grade from 35.7% to 46.4% while maintaining very high recovery.
- Mass pull of 76.5% indicates efficient pre-concentration.
Negative factors
- Results are from bench-scale HLS tests, which may not fully translate to commercial-scale DMS performance.
- Test was conducted on a high-grade composite sample, and variability across the deposit is not yet fully understood.
Evidence · text
“Test T1 (12.7mm crushed size): increase in grades by 35% for Zinc and 26% for Lead while retaining 97.3% of the Zinc and 99.4% of the Lead”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
HLSScotia Mine · zincRecovery: 97.6 %Head Grade: 19.4Head Grade Unit: %View all detailsHide details
Identity
- Project
- Scotia Mine
- Commodity
- zinc
- Region
- canada_ns
- Reported Region
- Nova Scotia
- Ticker
- EDM
Test Work
- Program Status
- preliminary
- Test Type
- HLS
- Processing Route
- Dense Media Separation
- Sample
- Test T2 (6.3mm crushed size) high-grade composite
- Grind P80
- 6300 µm
Recovery
- Recovery
- 97.6 %
- Recovery Basis
- actual_test
- Head Grade
- 19.4
- Head Grade Unit
- %
- Conc. Grade
- 23.6
- Conc. Grade Unit
- %
- Mass Pull
- 80.2 %
Lab
- Laboratory
- SGS Laboratories
- Consultant
- SGS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-01-06T00:00:00.000Z
Reasoning: The zinc recovery of 97.6% for Test T2 is exceptional, demonstrating strong separation efficiency and a good grade increase. This result is highly positive for the project's potential economics, showing similar performance at a finer crush size.
Positive factors
- Exceptional zinc recovery of 97.6% achieved at bench-scale, slightly higher than T1.
- Good upgrade in zinc grade from 19.4% to 23.6% while maintaining high recovery.
- Mass pull of 80.2% indicates efficient pre-concentration.
Negative factors
- Results are from bench-scale HLS tests, which may not fully translate to commercial-scale DMS performance.
- Test was conducted on a high-grade composite sample, and variability across the deposit is not yet fully understood.
Evidence · text
“Test T2 (6.3mm crushed size): increase in grade by 28% for Zinc and 13% for Lead while retaining 97.6% of the Zinc and 99.4% of the Lead”
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
HLSScotia Mine · leadRecovery: 99.4 %Head Grade: 33.5Head Grade Unit: %View all detailsHide details
Identity
- Project
- Scotia Mine
- Commodity
- lead
- Region
- canada_ns
- Reported Region
- Nova Scotia
- Ticker
- EDM
Test Work
- Program Status
- preliminary
- Test Type
- HLS
- Processing Route
- Dense Media Separation
- Sample
- Test T2 (6.3mm crushed size) high-grade composite
- Grind P80
- 6300 µm
Recovery
- Recovery
- 99.4 %
- Recovery Basis
- actual_test
- Head Grade
- 33.5
- Head Grade Unit
- %
- Conc. Grade
- 41.4
- Conc. Grade Unit
- %
- Mass Pull
- 80.2 %
Lab
- Laboratory
- SGS Laboratories
- Consultant
- SGS Laboratories
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-01-06T00:00:00.000Z
Reasoning: The lead recovery of 99.4% for Test T2 is outstanding, demonstrating excellent separation efficiency and a good grade increase. This result is highly positive for the project's potential economics, showing consistent performance at a finer crush size.
Positive factors
- Exceptional lead recovery of 99.4% achieved at bench-scale.
- Good upgrade in lead grade from 33.5% to 41.4% while maintaining very high recovery.
- Mass pull of 80.2% indicates efficient pre-concentration.
Negative factors
- Results are from bench-scale HLS tests, which may not fully translate to commercial-scale DMS performance.
- Test was conducted on a high-grade composite sample, and variability across the deposit is not yet fully understood.
Evidence · text
“Test T2 (6.3mm crushed size): increase in grade by 28% for Zinc and 13% for Lead while retaining 97.6% of the Zinc and 99.4% of the Lead”
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.