| Naics index | Naics index description |
|---|---|
| 212390 | Selenite mining and/or beneficiating |
| 212390 | Semiprecious stones mining and/or beneficiating |
| 212390 | Shell mining and/or beneficiating |
| 212390 | Shredding peat mining and/or beneficiating |
| 212390 | Sienna mining and/or beneficiating |
| 212390 | Sintered phosphate rock mining and/or beneficiating |
| 212390 | Soapstone mining and/or beneficiating |
| 212390 | Soda ash mining and/or beneficiating |
| 212390 | Soda ash, natural, mining and/or beneficiating |
| 212390 | Sodium borates, natural, mining and/or beneficiating |