 |
| |||
| pit-head winding gear | |||
| bank engine; winding engine; drawing engine; gig; hoisting engine | |||
| elevator for mining; lift for mining | |||
| machine d'extraction: 13 phrases in 6 subjects |
| Coal | 1 |
| General | 6 |
| Information technology | 1 |
| Labor law | 1 |
| Metallurgy | 2 |
| Technology | 2 |