U.S. Census Bureau

2007 NAICS Definitions


327992 Ground or Treated Mineral and Earth Manufacturing

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.

Cross-References. Establishments primarily engaged in crushing, grinding, pulverizing, washing, screening, sizing, or otherwise beneficiating mined clays, ceramics and refractory, and other miscellaneous nonmetallic minerals are classified in Industry Group 2123, Nonmetallic Mineral Mining and Quarrying.


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Corresponding Index Entries
327992327992327992 Barite processing beyond beneficiation
327992327992327992 Barium processing beyond beneficiation
327992327992327992 Blast furnace slag processing
327992327992327992 Desiccants, activated clay, manufacturing
327992327992327992 Diatomaceous earth processing beyond beneficiation
327992327992327992 Feldspar processing beyond beneficiation
327992327992327992 Flint processing beyond beneficiation
327992327992327992 Fuller's earth processing beyond beneficiating
327992327992327992 Graphite, natural (e.g., ground, pulverized, refined, blended), manufacturing
327992327992327992 Kaolin, processing beyond beneficiation
327992327992327992 Lead, black (i.e., natural graphite), ground, refined, or blended, manufacturing
327992327992327992 Magnesite, crude (e.g., calcined, dead-burned, ground), manufacturing
327992327992327992 Mica processing beyond beneficiation
327992327992327992 Perlite aggregates manufacturing
327992327992327992 Perlite, expanded, manufacturing
327992327992327992 Pumice (except abrasives) processing beyond beneficiation
327992327992327992 Pyrophyllite processing beyond beneficiation
327992327992327992 Shale, expanded, manufacturing
327992327992327992 Silicon, ultra high purity, manufacturing
327992327992327992 Talc processing beyond beneficiation
327992327992327992 Vermiculite, exfoliated, manufacturing