NAICS 331411 — Nonferrous Metal (except Aluminum) Smelting and Refining 
BEA sector: Primary smelting and refining of copper
Activity: Bars made in primary copper smelting and refining mills
Activity: Blister copper manufacturing
Activity: Copper alloys made in primary copper smelting and refining mills
Activity: Copper concentrate refining
Activity: Copper shapes (e.g., bar, billet, ingot, plate, sheet) made in primary copper smelting and refining mills
Activity: Copper smelting and refining, primary
Activity: Primary refining of copper
Activity: Primary smelting of copper
Activity: Refining copper, primary