North American Industry Classification System (NAICS) 2002
- 31-33 - Manufacturing
- 331 - Primary Metal Manufacturing
- 3314 - Non-Ferrous Metal (except Aluminum) Production and Processing
- 33141 - Non-Ferrous Metal (except Aluminum) Smelting and Refining
- 331410 - Non-Ferrous Metal (except Aluminum) Smelting and RefiningCAN
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