Gold and Silver Ore Mining

Establishments primarily engaged in mining gold ores from lode deposits or recovering gold from placer deposits using various methods. This includes ore dressing techniques such as crushing, grinding, gravity concentration and froth flotation, as well as processes like amalgamation, cyanidation and the onsite production of bullion at mines, mills or dredge locations. Sample business functions include bullion (gold) production at mine, mill or dredge sites, Calaverite mining, lode gold mining, placer gold mining, Sylvanite mining and Telluride gold mining.

Establishments primarily engaged in mining, milling, or otherwise preparing silver ores, including the production of bullion at the mine or mill sites. Sample business functions include bullion (silver) produced at mine or mill sites and silver ore mining.