- Blast furnaces and steel mills (3)
- Cold finishing of steel shapes (1)
- Gray and ductile iron foundries (1)
- Malleable iron foundries (1)
- Steel foundries, nec (1)
- Aluminum extruded products (1)
- Aluminum rolling and drawing, nec (1)
- Aluminum die-castings (1)
- Copper foundries (1)
- Nonferrous foundries, nec (2)
- Metal heat treating (2)
