- Barite processing beyond beneficiation
- Barium processing beyond beneficiation
- Blast furnace slag processing
- Desiccants, activated clay, manufacturing
- Diatomaceous earth processing beyond beneficiation
- Feldspar processing beyond beneficiation
- Flint processing beyond beneficiation
- Fuller’s earth processing beyond beneficiating
- Graphite, natural (e.g., ground, pulverized, refined, blended), manufacturing
- Kaolin, processing beyond beneficiation
- Lead, black (i.e., natural graphite), ground, refined, or blended, manufacturing
- Magnesite, crude (e.g., calcined, dead-burned, ground), manufacturing
- Mica processing beyond beneficiation
- Perlite aggregates manufacturing
- Perlite, expanded, manufacturing
- Pumice (except abrasives) processing beyond beneficiation
- Pyrophyllite processing beyond beneficiation
- Shale, expanded, manufacturing
- Silicon, ultra high purity, manufacturing
- Talc processing beyond beneficiation
- Vermiculite, exfoliated, manufacturing
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