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Major Group 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.

Industry Group 331: Steel Works, Blast Furnaces, And Rolling And Finishing Mills

Industry Group 332: Iron And Steel Foundries

Industry Group 333: Primary Smelting And Refining Of Nonferrous

Industry Group 334: Secondary Smelting And Refining Of Nonferrous

Industry Group 335: Rolling, Drawing, And Extruding Of Nonferrous

Industry Group 336: Nonferrous Foundries (castings)

Industry Group 339: Miscellaneous Primary Metal Products