Gold extraction refers to the processes required to extract gold from its ores. This may require a John Stewart MacArthur developed the cyanide process for gold extraction in 1887. The solubility of gold in a water and cyanide solution was
Sep 15, 2007 How gold is produced, from excavation to ingot-form. The Process of Excavating and Refining Gold Gold extraction with BORAX for small-scale miners - Rather Rich & Healthy than Poor & Poisoned - Duration: 9:48.