the cyanide-free biocatalyzed leaching process from YES Technologies, is said to be 200 times less toxic than cyanide. All ...

Montana officials said the initiative will be defended "vigorously." Initiative 137 bans new mines from using cyanide to leach gold or silver out of ore obtained from open-pit mines. A coalition of ...

Thiosulfate leaching has emerged as a promising alternative to the traditional cyanide method for gold extraction, primarily due to its lower environmental impact. As concerns about the toxicity ...

particularly copper and gold. This method involves stacking crushed ore in heaps and applying a leaching solution, typically containing acids or cyanide, to dissolve the desired metals.

The UN support follows an Argentine's court order of a five-day suspension of the gold leaching process at Veladero mine to determine whether there was any environmental damage from the cyanide leak.