| 333131 |
Cleaning machinery, mining-type, manufacturing |
| 333131 |
Coal breakers, cutters, and pulverizers manufacturing |
| 333131 |
Concentration machinery, mining-type, manufacturing |
| 333131 |
Core drills, underground mining-type, manufacturing |
| 333131 |
Crushing machinery, stationary, manufacturing |
| 333131 |
Cutters, coal, manufacturing |
| 333131 |
Drilling equipment, underground mining-type, manufacturing |
| 333131 |
Drills, core, underground mining-type, manufacturing |
| 333131 |
Drills, rock, underground mining-type, manufacturing |
| 333131 |
Dumpers, mining car, manufacturing |