NVRO levels up tailings processing tech
Original announcement by miningnewsnorth on
- Company
- NVRO Metals Ltd.
- Ticker
- Unavailable
- Exchange
- Unavailable
- Region
- Western Australia
- Primary commodity
- Silver
- Secondary commodities
- Gold, Zinc, Lead, Copper, Nickel
- Document categories
- Metallurgy, Agreement transaction
- Extracted
- 2026-09-18 17:19:25 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
NVRO Metals has completed a 202-hour continuous demonstration campaign processing Greens Creek tailings in Western Australia, achieving significant silver and gold upgrades in the leach residue. The successful run advances their proprietary technology to TRL 7 and supports a planned industrial-scale trial with Hecla Mining Company.
Reasoning: The continuous processing campaign successfully demonstrated significant metal upgrading and sulfide oxidation, advancing the technology toward commercial scale.
Positive factors
- Successful 202-hour continuous demonstration campaign
- Significant grade upgrade for silver and gold in residue
- High sulfide oxidation (97%) achieved
- Advancement to TRL 7 status
- Strategic partnership with Hecla Mining Company
Negative factors
- Results are preliminary and pending independent laboratory reconciliation
Facts used in scoring: 2
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Bench-scale testing demonstrated 98.1% silver and 99.5% gold recovery.
Evidence · text
“the process recovered 98.1% of the silver and 99.5% of the gold”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The process involves oxidation and leaching in a demonstration plant.
Evidence · text
“integrated NVRO Process using customer feedstock”
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: 2. Some facts used in scoring do not have a stored record.
Metallurgical Results (2)
continuous processingGreens Creek · silverRecovery: 98.1 %Head Grade: 169Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Greens Creek
- Commodity
- silver
- Region
- usa_ak
- Reported Region
- Alaska
Test Work
- Program Status
- detailed
- Test Type
- continuous processing
- Processing Route
- integrated NVRO Process (oxidation and leaching)
- Sample
- Greens Creek tailings leach residue (demonstration campaign)
Recovery
- Recovery
- 98.1 %
- Recovery Basis
- actual_test
- Head Grade
- 169
- Head Grade Unit
- g/t
- Conc. Grade
- 1795
- Conc. Grade Unit
- g/t
Lab
- Laboratory
- Nagrom
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-04T00:00:00.000Z
Reasoning: Significant concentration of silver in the residue compared to feed.
Positive factors
- 10.6-fold upgrade from feed grade
- High recovery reported in bench-scale testing
Negative factors
- Preliminary results pending independent lab reconciliation
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 98.1% is at or above the exceptional band (90%)
continuous processingGreens Creek · goldRecovery: 99.5 %Head Grade: 1.51Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Greens Creek
- Commodity
- gold
- Region
- usa_ak
- Reported Region
- Alaska
Test Work
- Program Status
- detailed
- Test Type
- continuous processing
- Processing Route
- integrated NVRO Process (oxidation and leaching)
- Sample
- Greens Creek tailings leach residue (demonstration campaign)
Recovery
- Recovery
- 99.5 %
- Recovery Basis
- actual_test
- Head Grade
- 1.51
- Head Grade Unit
- g/t
- Conc. Grade
- 16.3
- Conc. Grade Unit
- g/t
Lab
- Laboratory
- Nagrom
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-04T00:00:00.000Z
Reasoning: Significant concentration of gold in the residue compared to feed.
Positive factors
- 10.8-fold upgrade from feed grade
- Near-complete gold recovery in bench-scale testing
Negative factors
- Preliminary results pending independent lab reconciliation
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 99.5% is at or above the exceptional band (95%)
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.