EnviroGold Global Announces Positive Results from Hecla Mining Company's Greens Creek Tailings

Executive Summary

• EnviroGold Global completed Phase 2 of its structured test‑work program on Hecla Mining’s Greens Creek tailings, confirming technical suitability and delivering near‑complete sulfide oxidation.
• Laboratory results showed exceptionally high metal recoveries: 98.07 % silver and 99.46 % gold, indicating strong potential for commercial-scale processing.
• A bulk sample is now being shipped to the company’s West Australian development facility where Phase 3 pilot‑plant optimization and Phase 4 demonstration‑scale processing will be undertaken.

Key Details

• Counterparty Identification: Hecla Mining Company (Greens Creek Mine, Alaska) disclosed as the Tier‑1 customer for this project.
• Phase 2 Outcome: Demonstrated near‑complete oxidation of sulfide minerals and strong liberation of contained metals; recovery rates of 98.07 % Ag and 99.46 % Au.
• Process Technology: NVRO Process™ – proprietary method for extracting precious, base, and critical metals from sulfidic tailings.
• Bulk Sample Shipment: Feedstock from Greens Creek is en route to EnviroGold’s West Australian pilot‑plant facility for subsequent phases.
• Phase 3 (Pilot‑Plant Optimization): Will fine‑tune operating conditions, validate product quality/value, and generate data for techno‑economic modelling.
• Phase 4 (Demonstration‑Scale Processing): Planned to confirm industrial‑scale performance, waste‑stream characteristics, and commercial viability.
• Potential Recoveries: Besides silver and gold, the process could recover base metals and critical minerals pending further study and commercial arrangements.
• Environmental Benefit: Expected reduction of long‑term liabilities associated with legacy mine waste by reprocessing tailings.
• CEO Comment: “The test work results clearly demonstrate the NVRO Process™ has the potential to unlock significant metal production from mineralization contained in Greens Creek’s tailings facility….” – Grant Freeman, CEO.

Notable Quotes

“We are grateful to Hecla for the opportunity to assess their tailings and the potential commercial opportunity.” – Grant Freeman, Chief Executive Officer.