| Naics index | Naics index description |
|---|---|
| 212323 | Kyanite mining and/or beneficiating |
| 212323 | Laterite mining and/or beneficiating |
| 212323 | Magnesite mining and/or beneficiating |
| 212323 | Nepheline syenite mining and/or beneficiating |
| 212323 | Olivine, non-gem, mining and/or beneficiating |
| 212323 | Paper clay mining and/or beneficiating |
| 212323 | Pegmatite, feldspar, mining and/or beneficiating |
| 212323 | Pinite mining and/or beneficiating |
| 212323 | Plastic fire clay mining and/or beneficiating |
| 212323 | Refractory minerals mining and/or beneficiating |