- retreat longwall system
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сплошная система разработки с выемкой обратным ходом
English-Russian dictionary of geology. 2011.
retreat longwall system
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mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… … Universalium
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