A sodium cyanide solution is commonly used to leach gold from ore. There are two types of leaching: Heap leaching: In the open, cyanide solution is sprayed over huge heaps of crushed ore spread atop giant collection pads. The cyanide dissolves the gold from .. How to Make Gold at Home Legit Working 2017 YouTube.
Underground gold mines could still use cyanide to leach gold from ore and open pit mines can use some other method. But open pits and cyanide leach used together became illegal on Election Day 1998.