Copper, Silver, Lead and Zinc Smelting and Refining

**Exclusions/References:** - Units mainly engaged in mining but not smelting ores of copper, silver, lead and zinc are included in the appropriate classes of Group 080 Metal Ore Mining. **Primary Activities:** - Blister copper manufacturing - Copper smelting, refining - Copper, silver, lead or zinc from scrap or waste material recovering - Electrolytic copper manufacturing - Electrolytic zinc manufacturing - Lead smelting or refining - Silver-lead bullion manufacturing - Silver smelting, refining - Spelter manufacturing - Wirebar, copper, manufacturing - Zinc smelting or refining