33  Primary Metal Industries

This major group includes establishments engaged in smelting and refining
ferrous and nonferrous metals from ore, pig, or scrap; in rolling, drawing,
and alloying metals; in manufacturing castings and other basic metal
products; and in manufacturing nails, spikes, and insulated wire and cable.
This major group includes the production of coke. Establishments primarily
engaged in manufacturing metal forgings or stampings are classified in
industry group 346.