- Blast furnaces and steel mills (6)
- Steel wire and related products (1)
- Steel pipe and tubes (3)
- Gray and ductile iron foundries (3)
- Steel foundries, nec (2)
- Secondary nonferrous metals (3)
- Aluminum sheet, plate, and foil (1)
- Aluminum extruded products (6)
- Aluminum rolling and drawing, nec (4)
- Nonferrous rolling and drawing, nec (2)
- Nonferrous wiredrawing and insulating (1)
- Nonferrous die-castings except aluminum (1)
- Aluminum foundries (3)
- Copper foundries (1)
- Nonferrous foundries, nec (1)
- Metal heat treating (2)
- Primary metal products (3)
