| 212390 |
Mica mining and/or beneficiating |
| 212390 |
Millstones mining and/or beneficiating |
| 212390 |
Mineral pigments, natural, mining and/or beneficiating |
| 212390 |
Muriate of potash, mining |
| 212390 |
Muscovite mining and/or beneficiating |
| 212390 |
Native asphalt mining and/or beneficiating |
| 212390 |
Natural abrasives (e.g., emery, grindstones, hones, pumice) (except sand) mining and/or beneficiating |
| 212390 |
Ocher mining and/or beneficiating |
| 212390 |
Oilstones mining and/or beneficiating |
| 212390 |
Optical grade calcite mining and/or beneficiating |