- Blast furnaces and steel mills (9)
- Electrometallurgical products (1)
- Steel wire and related products (5)
- Cold finishing of steel shapes (5)
- Steel pipe and tubes (3)
- Gray and ductile iron foundries (1)
- Primary copper (1)
- Secondary nonferrous metals (2)
- Aluminum extruded products (2)
- Aluminum rolling and drawing, nec (1)
- Nonferrous rolling and drawing, nec (4)
- Nonferrous wiredrawing and insulating (3)
- Nonferrous die-castings except aluminum (1)
- Aluminum foundries (1)
- Copper foundries (1)
- Nonferrous foundries, nec (1)
- Metal heat treating (8)
- Primary metal products (1)