| Naics index | Naics index description |
|---|---|
| 212323 | Cornwall stone mining and/or beneficiating |
| 212323 | Cyanite mining and/or beneficiating |
| 212323 | Diaspore mining and/or beneficiating |
| 212323 | Dumortierite mining and/or beneficiating |
| 212323 | Earth, fuller's (e.g., all natural bleaching clays), mining and/or beneficiating |
| 212323 | Feldspar mining and/or beneficiating |
| 212323 | Fire clay mining and/or beneficiating |
| 212323 | Flint clay mining and/or beneficiating |
| 212323 | Fuller's earth mining and/or beneficiating |
| 212323 | Kaolin mining and/or beneficiating |