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1 призабойная крепь
Mining: coalface support (угольного забоя), face support -
2 крепление угольного забоя
Mining: coalface supportУниверсальный русско-английский словарь > крепление угольного забоя
См. также в других словарях:
Longwall mining — is a form of underground coal mining where a long wall (typically about 250 400 m long) of coal is mined in a single slice (typically 1 2 m thick). The longwall panel (the block of coal that is being mined) is typically 3 4 km long and 250 400 m… … Wikipedia