| Naics index | Naics index description |
|---|---|
| 212230 | Zincite mining and/or beneficiating |
| 212290 | Antimony concentrates beneficiating |
| 212290 | Antimony ores mining and/or beneficiating |
| 212290 | Bastnaesite mining and/or beneficiating |
| 212290 | Bauxite mining and/or beneficiating |
| 212290 | Beryl mining and/or beneficiating |
| 212290 | Beryllium concentrates beneficiating |
| 212290 | Beryllium ores mining and/or beneficiating |
| 212290 | Carnotite mining and/or beneficiating |
| 212290 | Cerium concentrates beneficiating |