- Blast furnaces and steel mills (97)
- Electrometallurgical products (2)
- Steel wire and related products (25)
- Cold finishing of steel shapes (4)
- Steel pipe and tubes (16)
- Gray and ductile iron foundries (28)
- Malleable iron foundries (7)
- Steel investment foundries (9)
- Steel foundries, nec (14)
- Primary copper (1)
- Primary aluminum (3)
- Primary nonferrous metals, nec (13)
- Secondary nonferrous metals (13)
- Copper rolling and drawing (2)
- Aluminum sheet, plate, and foil (7)
- Aluminum extruded products (11)
- Aluminum rolling and drawing, nec (4)
- Nonferrous rolling and drawing, nec (9)
- Nonferrous wiredrawing and insulating (16)
- Aluminum die-castings (20)
- Nonferrous die-castings except aluminum (16)
- Aluminum foundries (25)
- Copper foundries (15)
- Nonferrous foundries, nec (11)
- Metal heat treating (25)
- Primary metal products (17)
