In mining, cyanide spills can cause fish kills and other problems, most recently at a river in Ghana last week downstream from a gold mine. While cyanide in mining is nothing new, using heap leaching ...

Extracting gold from ore is a poisonous business. The most common method is cyanide leaching, where cyanide salts in solution are used to suck the gold out from its ore. You get gold, but you also get ...

Getting your Trinity Audio player ready... LEADVILLE — Millions of tons of waste from decades-old mining operations sit in the hills east of town. The brown and orange piles of abandoned ore rise 30 ...

That same year Pegasus Gold filed for bankruptcy. On Monday, the Montana Department of Environmental Quality announced it has transferred an operating permit from Majesty Mining to Bear Claw Mining ...

Dear EarthTalk: Most gold mining operations use cyanide to extract gold from surrounding rock. What are the environmental implications of this, and are there alternatives? --J. Pelton, via e-mail ...

Vancouver, British Columbia--(Newsfile Corp. - January 5, 2026) - RZOLV Technologies Inc. (TSXV: RZL) (the "Company" or "RZOLV") today reported the results of a bulk-scale vat leach metallurgical test ...

PERTH (miningweekly.com) – The Commonwealth Scientific and Industrial Research Organisation (CSIRO) has licensed Perth-based Clean Mining to sell and distribute a new cyanide-free gold processing ...

RENO, Nev., July 28, 2020 /PRNewswire/ -- Itronics Inc. (OTC: ITRO), an emerging "Cleantech Materials" growth Company that produces GOLD'n GRO Multi-Nutrient Fertilizers and Silver, updates its ...

(MENAFN- Newsfile Corp) RZOLV Technologies Successfully Completes Bulk-Scale Vat Leach Test at Operating Gold Mine, Advancing Commercial Validation of RZOLV Non-Cyanide Gold Extraction January 05, ...