| Naics index | Naics index description |
|---|---|
| 212390 | Gypsum mining and/or beneficiating |
| 212390 | Hones mining and/or beneficiating |
| 212390 | Humus, peat, mining and/or beneficiating |
| 212390 | Iceland spar (i.e., optical grade calcite), mining and/or beneficiating |
| 212390 | Jade mining and/or beneficiating |
| 212390 | Kernite mining and/or beneficiating |
| 212390 | Lepidolite mining and/or beneficiating |
| 212390 | Lithium mineral mining and/or beneficiating |
| 212390 | Marcasite mining and/or beneficiating |
| 212390 | Meerschaum mining and/or beneficiating |