Industry: 3331—Primary Smelting and Refining of Copper
Establishments primarily engaged in smelting copper from the ore, and in refining copper by electrolytic or other processes. Establishments primarily engaged in rolling, drawing, or extruding copper are classified in Industry 3351.
| Bars, refinery: primary copper | Copper smelting and refining, primary |
| Blister copper | Pigs, copper |
| Blocks, copper | Primary smelting and refining of copper |
| Copper ingots and refinery bars, primary | Slabs, copper: primary |
| Codes |
Titles | Total Marketable US Businesses |
| 33310000 | Primary copper | 18 |
| 33310100 | Primary copper smelter products | 4 |
| 33310101 | Blister copper | 1 |
| 33310102 | Pigs, copper | 0 |
| 33310200 | Refined primary copper products | 7 |
| 33310201 | Bars (primary), copper | 1 |
| 33310202 | Billets (primary), copper | 0 |
| 33310203 | Blocks, copper | 1 |
| 33310204 | Cakes (primary), copper | 3 |
| 33310205 | Cathodes (primary), copper | 2 |
| 33310206 | Ingots and ingot bars (primary), copper | 0 |
