- Blast furnaces and steel mills (51)
- Steel wire and related products (7)
- Cold finishing of steel shapes (3)
- Steel pipe and tubes (6)
- Gray and ductile iron foundries (3)
- Malleable iron foundries (1)
- Steel investment foundries (3)
- Steel foundries, nec (12)
- Primary aluminum (2)
- Primary nonferrous metals, nec (3)
- Secondary nonferrous metals (10)
- Copper rolling and drawing (7)
- Aluminum sheet, plate, and foil (8)
- Aluminum extruded products (14)
- Aluminum rolling and drawing, nec (5)
- Nonferrous rolling and drawing, nec (8)
- Nonferrous wiredrawing and insulating (7)
- Aluminum die-castings (1)
- Nonferrous die-castings except aluminum (1)
- Aluminum foundries (2)
- Copper foundries (4)
- Nonferrous foundries, nec (4)
- Metal heat treating (2)
- Primary metal products (2)
