| 212312 |
Dolomite crushed and broken stone mining and/or beneficiating |
| 212312 |
Lime rock, ground, mining and/or beneficiating |
| 212312 |
Limestone (except bituminous) crushed and broken stone mining and/or beneficiating |
| 212312 |
Limestone beneficiating plants (e.g., grinding or pulverizing) |
| 212312 |
Marl crushed and broken stone mining and/or beneficiating |
| 212312 |
Riprap, limestone, mining or quarrying |
| 212312 |
Riprap, limestone, preparation plants |
| 212312 |
Travertine crushed and broken stone mining and/or beneficiating |
| 212312 |
Tufa, calcareous, crushed and broken stone, mining and/or beneficiating |
| 212312 |
Whiting crushed and broken stone, mining and/or beneficiating |