This U.S. industry comprises establishments primarily engaged in calcining, dead burning, or otherwise processing beyond beneficiation, clays, ceramic and refractory minerals, barite, and miscellaneous nonmetallic minerals.

Including:

• 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
• Soapstone processing beyond beneficiation
• Talc processing beyond beneficiation
• Vermiculite, exfoliated, manufacturing