- Blast furnaces and steel mills (291)
- Electrometallurgical products (8)
- Steel wire and related products (77)
- Cold finishing of steel shapes (55)
- Steel pipe and tubes (68)
- Gray and ductile iron foundries (58)
- Malleable iron foundries (5)
- Steel investment foundries (10)
- Steel foundries, nec (45)
- Primary copper (7)
- Primary aluminum (11)
- Primary nonferrous metals, nec (17)
- Secondary nonferrous metals (108)
- Copper rolling and drawing (26)
- Aluminum sheet, plate, and foil (34)
- Aluminum extruded products (44)
- Aluminum rolling and drawing, nec (14)
- Nonferrous rolling and drawing, nec (45)
- Nonferrous wiredrawing and insulating (61)
- Aluminum die-castings (55)
- Nonferrous die-castings except aluminum (46)
- Aluminum foundries (73)
- Copper foundries (58)
- Nonferrous foundries, nec (66)
- Metal heat treating (80)
- Primary metal products (51)
