Variant of NAICS 2012 - Durable / non-durable manufacturing industries

• 31-33 - Manufacturing
• 31-33d - Durable manufacturing industries
• 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.