Cyanide leaching for gold The presently practiced gold extraction methods, where mercury amalgamation is followed by cy de leaching, metal coat buttons skull result in two serious health and environmental hazards, which need to be & Micazo Bulllzz Cyanide leaching for gold The presently practiced gold extraction methods, where mercury amalgamation is followed by cy de leaching, metal coat buttons skull result in two serious health and environmental hazards, which need to be