Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Industrial production (based on the 2008 International Recommendations for Industrial Statistics)

• 1 - Industrial production
• 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.