North American Industry Classification System (NAICS) 1997

• 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

This industry comprises establishments primarily engaged in smelting non-ferrous metals, except aluminum, from ores; and refining these metals by electrolytic or other processes. Establishments engaged in secondary activities, such as rolling or extruding basic shapes, from metal produced in the same establishment, are included.