| |||
pit barring | |||
barring; ground support; GS (ground support Madi Azimuratov) | |||
shoring; timbering | |||
pithead frame; shaft lining |
шахтная крепь: 45 phrases in 6 subjects |
Electronics | 1 |
Geology | 4 |
Military | 1 |
Mining | 26 |
Occupational health & safety | 3 |
Technology | 10 |