Cyanide is especially manufactured for that mining of silver and gold: It can help dissolve these metals allowing separation from the other solids. Inside the cyanide method, finely ground higher-grade ore is blended with the cyanide (in a ratio of about 1:500 elements NaCN to ore); minimal-grade ores are stacked https://elliottbzwro.shotblogs.com/the-5-second-trick-for-potassium-cyanide-disposal-44437482