 |
| |||
| underground technique (MichaelBurov) | |||
| underground mining; underground working; deep mining | |||
| разработка подземным способом: 15 phrases in 4 subjects |
| Construction | 1 |
| Gold mining | 9 |
| Mining | 3 |
| Technology | 2 |
|
| |||
| underground technique (MichaelBurov) | |||
| underground mining; underground working; deep mining | |||
| разработка подземным способом: 15 phrases in 4 subjects |
| Construction | 1 |
| Gold mining | 9 |
| Mining | 3 |
| Technology | 2 |