Minerals and Earths, Ground or Otherwise Treated

Establishments operating without a mine or quarry and primarily engaged in crushing, grinding, pulverizing, or otherwise preparing clay, ceramic, and refractory minerals; barite; and miscellaneous nonmetallic minerals, except fuels. These minerals are the crude products mined by establishments of Industry Groups 145 and 149, and by those of Industry 1479 mining barite. Also included are establishments primarily crushing slag and preparing roofing granules. The beneficiation or preparation of other minerals and metallic ores, and the cleaning and grading of coal, are classified in Division B, Mining, whether or not the operation is associated with a mine. Barite, ground or otherwise treated Barium, ground or otherwise treated Blast furnace slag Clay for petroleum refining, chemically processed Clay, ground or otherwise treated Desiccants, activated: clay Diatomaceous earth, ground or otherwise treated Feldspar, ground or otherwise treated Filtering clays, treated purchased materials Flint, ground or otherwise treated Foundry facings, ground or otherwise treated Fuller's earth, ground or otherwise treated Graphite, natural: ground, pulverized, refined, or blended Kaolin, ground or otherwise treated Lead, black (natural graphite): ground, refined, or blended Magnesite, crude: ground, calcined, or dead-burned Mica, ground or otherwise treated Perlite aggregate Perlite, expanded Plumbago: ground, refined, or blended Pulverized earth Pumice, ground or otherwise treated Pyrophyllite, ground or otherwise treated Roofing granules Shale, expanded Silicon, ultra high purity: treated purchased materials Slag, crushed or ground Spar, ground or otherwise treated Steatite, ground or otherwise treated Talc, ground or otherwise treated Vermiculite, ex-foliated