EnviroGold TSXV listing: NVRO tailings leach capex and footprint notes for engineers
Reviewed by Joe Ashwell

First reported on MINING.com
30 Second Briefing
Cleantech firm EnviroGold Global (CSE: NVRO) will begin trading on the TSX Venture Exchange on 4 February, maintaining its NVRO ticker, with a current C$51.5 million market capitalisation and shares at C$0.11. The company is advancing its NVRO hybrid acid leaching process for mine waste and tailings, claiming >95% gold and silver recovery, strong copper recovery, and operation at low temperature and atmospheric pressure to break sulphide bonds. EnviroGold reports up to 70% reduction in plant footprint and capex and as much as 96% lower carbon emissions versus conventional processing.
Technical Brief
- NVRO hybrid acid leach is configured specifically for mine waste and tailings reprocessing, not run-of-mine ore.
- Process chemistry targets sulphide bond breakage at atmospheric pressure, avoiding autoclaves and associated pressure-vessel infrastructure.
- Low-temperature operation enables use of lighter-duty materials and simpler thermal management than pressure-oxidation or roasting.
- Pre-concentration integration is central to the flowsheet, reducing downstream leach circuit scale and associated civil footprint.
- Strong copper and base metal recovery is claimed, indicating potential multi-metal revenue streams from legacy tailings facilities.
Our Take
EnviroGold Global’s NVRO demonstration work reported in the 22 January 2026 item in our database suggests the TSXV move is timed to coincide with a more mature understanding of sulphide pre-concentration, which can make it easier to market the technology to mid-tier gold and silver producers.
With gold and silver appearing in over 300 keyword-matched pieces in our coverage, a cleantech flowsheet claiming large footprint and capex reductions positions EnviroGold as a potential retrofit option for existing Canadian and Australian operations rather than just a greenfield technology play.
The presence of 5N Plus and a US Department of Defense funding reference, alongside germanium metal in the commodity list, signals that EnviroGold’s platform may be of interest not only to precious-metal miners but also to North American critical-mineral and defence-linked supply chains looking for low-impact recovery routes.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
Related Articles
Related Industries & Products
Mining
Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.
Construction
Quality control software for construction companies with material testing, batch tracking, and compliance management.
CMRR-io
Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.
HYDROGEO-io
Comprehensive hydrogeological testing platform for managing, analysing, and reporting on packer tests, lugeon values, and hydraulic conductivity assessments.
GEODB-io
Centralised geotechnical data management solution for storing, accessing, and analysing all your site investigation and material testing data.