| 333131 |
Feeders, mineral beneficiating-type, manufacturing |
| 333131 |
Flotation machinery, mining-type, manufacturing |
| 333131 |
Hammer mill machinery (i.e., rock and ore crushing machines), stationary, manufacturing |
| 333131 |
Loading machines, underground mining, manufacturing |
| 333131 |
Mineral processing and beneficiating machinery manufacturing |
| 333131 |
Mining cars manufacturing |
| 333131 |
Ore crushing, washing, screening, and loading machinery manufacturing |
| 333131 |
Pellet mills machinery, mining-type, manufacturing |
| 333131 |
Quarrying machinery and equipment manufacturing |
| 333131 |
Rock crushing machinery, stationary, manufacturing |