- Blast furnaces and steel mills (3)
- Cold finishing of steel shapes (1)
- Steel investment foundries (1)
- Primary nonferrous metals, nec (3)
- Secondary nonferrous metals (1)
- Copper rolling and drawing (1)
- Aluminum sheet, plate, and foil (1)
- Nonferrous rolling and drawing, nec (1)
- Nonferrous die-castings except aluminum (1)
- Nonferrous foundries, nec (1)
- Primary metal products (1)
