- Lead smelting and refining (secondary) (1)
- Zinc smelting and refining (secondary) (1)
- Gold smelting and refining (secondary) (2)
- Silver recovery from used photographic film (6)
- Aluminum smelting and refining (secondary) (8)
- Babbitt metal smelting and refining (secondary) (1)
- Brass smelting and refining (secondary) (1)
- Bronze smelting and refining (secondary) (2)
- Detinning of cans and scrap (3)
- Nickel smelting and refining (secondary) (1)
- Recovery and refining of nonferrous metals (32)
