- Antifriction bearing metals, lead-base (1)
- Precious metals (2)
- Silicon refining (primary, over 99% pure) (2)
- Silicon, pure (1)
- Beryllium metal (3)
- Magnesium refining (primary) (2)
- Rhenium refining (primary) (1)
- Titanium metal, sponge and granules (2)
- Zirconium metal, sponge and granules (1)
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