| 212311 |
Trap rock mining or quarrying |
| 212311 |
Travertine mining or quarrying |
| 212311 |
Tufa, calcareous, mining or quarrying |
| 212311 |
Verde' antique mining or quarrying |
| 212311 |
Volcanic rock, mining or quarrying |
| 212312 |
Agricultural limestone mining and/or beneficiating |
| 212312 |
Calcareous tufa crushed and broken stone mining and/or beneficiating |
| 212312 |
Cement rock crushed and broken stone mining and/or beneficiating |
| 212312 |
Chalk crushed and broken stone mining and/or beneficiating |
| 212312 |
Chalk, ground or otherwise treated, mining and/or beneficiating |