 |
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| longwalling by top-slicing; longwall mining; longwall tophole system; longwall work; longwall; longwork; modified longwall; regular longwall | |||
| longwall stoping | |||
| выемка лавами: 38 phrases in 5 subjects |
| Energy industry | 2 |
| Geology | 2 |
| Makarov | 2 |
| Mining | 29 |
| Technology | 3 |