- Antifriction bearing metals, lead-base (2)
- Zinc refining (primary), including slabs & dust (1)
- Precious metals (22)
- Gold refining (primary) (9)
- Platinum group metal refining (primary) (3)
- Silver refining (primary) (1)
- Silicon refining (primary, over 99% pure) (1)
- Silicon, epitaxial (silicon alloy) (2)
- Silicon, pure (5)
- Beryllium metal (1)
- Titanium metal, sponge and granules (1)
