| Naics index | Naics index description |
|---|---|
| 212390 | Alabaster mining and/or beneficiating |
| 212390 | Alum, natural, mining and/or beneficiating |
| 212390 | Alunite mining and/or beneficiating |
| 212390 | Amblygonite mining and/or beneficiating |
| 212390 | Amethyst mining and/or beneficiating |
| 212390 | Apatite mining and/or beneficiating |
| 212390 | Arsenic mineral mining and/or beneficiating |
| 212390 | Asbestos mining and/or beneficiating |
| 212390 | Ash, volcanic, mining and/or beneficiating |
| 212390 | Asphalt rock mining and/or beneficiating |