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.

This industry comprises establishments primarily engaged in rolling, drawing, extruding and re-alloying copper, brass, bronze and other copper-based alloys, to produce products such as plates, sheets, strips, bars, wire and tubing, and specialty alloys. Establishments primarily engaged in drawing copper wire (whether or not the establishment further works the wire by such operations as insulating it), and in recovering copper from scrap, are included.

This industry comprises establishments, not classified to any other industry, primarily engaged in rolling, drawing, extruding and re-alloying non-ferrous metals, to produce products such as plates, sheets, strips, bars, wire and tubing, and specialty alloys. Establishments primarily engaged in drawing wire of these metals (whether or not the establishment further works the wire by such operations as insulating it), and in recovering these metals from scrap, are included.