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V. TYSCHENKO'S METHOD FOR COAL EXTRACTION AT THIN STEEP SEAMS
V. TYSCHENKO'S METHOD FOR COAL EXTRACTION AT THIN STEEP SEAMS
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机译:V. TYSCHENKO法在薄壁煤层中提取煤的方法
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摘要
Method for coal extraction at thin steep seams is performed by busters in bands along the tilt. Simultaneousely several bands are developed, with inclination of those to the worked-out space; and each separate band is extracted with one face at the whole length of the bottom.
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