Search
Search the whole magazine.
Full-text search across every article — headlines, decks, body copy, pull quotes, captions and FAQs — plus our editorial and legal policies.
2 results for “Cyanide leaching” in Mining
Mining · 22 May 2026
The Other Supply Chain: Artisanal Mining and the Mercury Problem
…l or literacy in chemistry. · Alternatives exist — gravity concentration, borax smelting, cyanide in controlled plants — but each shifts risk rather than eliminating it. · Traceability schemes work only where miners can actually access a legal buyer at a fair price. · What is art…
Amara Okonjo · 12 min read
Mining · 5 August 2026
Grade, Cut-off and the Arithmetic of an Open Pit
…· Recovery: the ounces you do not get · Milling does not extract everything. Conventional cyanide leaching with carbon adsorption recovers something like 88 to 94 percent of contained gold from amenable ore. The remainder — locked in sulphide minerals, adsorbed onto carbonaceous…
Amara Okonjo · 16 min read
