Gold Ore Mining

**Exclusions/References:** - Units mainly engaged in custom smelting or refining of gold are included in Class 2139 Other Basic Non-Ferrous Metal Manufacturing. **Primary Activities:** - Alluvial gold mining - Eluvial gold mining - Gold bullion production - Gold dredging - Gold mining - Gold ore roasting and flotation extraction, including metallurgical hydro-extraction - Gold washing or sluicing - Reworking of mullock heaps or tailings for gold