- Blast furnaces and steel mills (9)
- Steel wire and related products (1)
- Steel investment foundries (1)
- Steel foundries, nec (5)
- Nonferrous rolling and drawing, nec (1)
- Nonferrous wiredrawing and insulating (2)
- Aluminum foundries (1)
- Copper foundries (1)
- Nonferrous foundries, nec (4)
- Metal heat treating (2)
- Primary metal products (1)
