NAICS
331423: Secondary Smelting, Refining, and Alloying of Copper
This U.S. industry comprises establishments primarily engaged in (1)
recovering copper and copper alloys from scrap and/or (2) alloying
purchased copper. Establishments in this industry make primary forms,
such as ingot, wire bar, cake, and slab from copper or copper alloys,
such as brass and bronze.
The data published with NAICS code 331423 include the following
SIC industries:
3341 Secondary nonferrous metals (pt)
3399 Primary metal products, n.e.c. (pt)
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