- Blast furnaces and steel mills (85)
- Steel wire and related products (53)
- Cold finishing of steel shapes (12)
- Steel pipe and tubes (8)
- Gray and ductile iron foundries (7)
- Steel investment foundries (12)
- Steel foundries, nec (4)
- Primary copper (4)
- Primary aluminum (2)
- Primary nonferrous metals, nec (18)
- Secondary nonferrous metals (10)
- Copper rolling and drawing (19)
- Aluminum sheet, plate, and foil (6)
- Aluminum extruded products (7)
- Aluminum rolling and drawing, nec (4)
- Nonferrous rolling and drawing, nec (17)
- Nonferrous wiredrawing and insulating (44)
- Aluminum die-castings (9)
- Nonferrous die-castings except aluminum (13)
- Aluminum foundries (12)
- Copper foundries (11)
- Nonferrous foundries, nec (12)
- Metal heat treating (41)
- Primary metal products (19)
