2002 NAICS Definitions

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.

Cross-References. Establishments primarily engaged in--

• Sorting and breaking up scrap metal without also smelting or refining--are classified in Industry 423930, Recyclable Material Merchant Wholesalers;
• Operating facilities where commingled recyclable materials, such as paper, plastics, used beverage cans, and metals, are sorted into distinct categories without also smelting or refining--are classified in Industry 562920, Materials Recovery Facilities;
• Smelting copper ore and/or the primary refining of copper--are classified in U.S. Industry 331411, Primary Smelting and Refining of Copper;
• Recovering copper and copper alloys from scrap and rolling, drawing, or extruding shapes--are classified in U.S. Industry 331421, Copper Rolling, Drawing, and Extruding;
• Recovering copper and copper alloys from scrap and drawing wire (except mechanical)--are classified in U.S. Industry 331422, Copper Wire (except Mechanical) Drawing; and
• Recovering nonferrous metals (except copper, aluminum) from scrap and making primary forms and/or alloying purchased nonferrous metals (except copper and aluminum)--are classified in U.S. Industry 331492, Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum).

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No change 1997 to 2002

2002 NAICS to 1987 SIC

1997 Economic Census

Bridge Between 1997 NAICS and SIC

2002 NAICS	1997 NAICS	1987 SIC	Corresponding Index Entries
331423	331423	3341	Alloying purchased copper
331423	331423	3341	Alloying purchased copper metals
331423	331423	3341	Copper alloys (e.g., brass, bronze) made from purchased metal or scrap
331423	331423	3341	Copper and copper-based shapes (e.g., cake, ingot, slag, wire bar) made from purc
331423	331423	3399	Copper powder, flakes, and paste made from purchased copper
331423	331423	3341	Copper secondary smelting and alloying
331423	331423	3341	Copper secondary smelting and refining from purchased metal or scrap
331423	331423	3399	Metal powder and flake made from purchased copper
331423	331423	3399	Paste made from purchased copper
331423	331423	3399	Powder made from purchased copper
331423	331423	3341	Refining copper, secondary

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