Cyanide-Free Mining Hits The Field | Kitco News
Mobile Apps. Mobile Apps. Kcast Gold Live. Free live gold price, live silver price, charts, news ... the Clean Mining process "...replaces cyanide with a reagent, known as thiosulphate, creating a relatively cost-effective, non-toxic and safe alternative to conventional cyanide-based gold recovery process." By Michael McCrae. For Kitco News.