| 212323 |
Rubber clay mining and/or beneficiating |
| 212323 |
Shale (except oil shale) mining and/or beneficiating |
| 212323 |
Sillimanite mining and/or beneficiating |
| 212323 |
Slip clay mining and/or beneficiating |
| 212323 |
Stoneware clay mining and/or beneficiating |
| 212323 |
Syenite, nepheline, mining and/or beneficiating |
| 212323 |
Topaz, non-gem, mining and/or beneficiating |
| 212390 |
Abrasive stones (e.g., emery, grindstones, hones, pumice) mining and/or beneficiating |
| 212390 |
Abrasives, natural (except sand), mining and/or beneficiating |
| 212390 |
Agate mining and/or beneficiating |