| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 327992 | 327992 | 327992 | Barite processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Barium processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Blast furnace slag processing | |||
| 327992 | 327992 | 327992 | Desiccants, activated clay, manufacturing | |||
| 327992 | 327992 | 327992 | Diatomaceous earth processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Feldspar processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Flint processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Fuller's earth processing beyond beneficiating | |||
| 327992 | 327992 | 327992 | Graphite, natural (e.g., ground, pulverized, refined, blended), manufacturing | |||
| 327992 | 327992 | 327992 | Kaolin, processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Lead, black (i.e., natural graphite), ground, refined, or blended, manufacturing | |||
| 327992 | 327992 | 327992 | Magnesite, crude (e.g., calcined, dead-burned, ground), manufacturing | |||
| 327992 | 327992 | 327992 | Mica processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Perlite aggregates manufacturing | |||
| 327992 | 327992 | 327992 | Perlite, expanded, manufacturing | |||
| 327992 | 327992 | 327992 | Pumice (except abrasives) processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Pyrophyllite processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Shale, expanded, manufacturing | |||
| 327992 | 327992 | 327992 | Silicon, ultra high purity, manufacturing | |||
| 327992 | 327992 | 327992 | Talc processing beyond beneficiation | |||
| 327992 | 327992 | 327992 | Vermiculite, exfoliated, manufacturing |