The shortwall ladder prop mining method namely strip extraction has been more extensively applied currently in small coal mine of Shaanxi province.
短壁刀柱采
法即条带开采,目前在陕西省
开采中较广泛应用。
The shortwall ladder prop mining method namely strip extraction has been more extensively applied currently in small coal mine of Shaanxi province.
短壁刀柱采法即条带开采,目前在陕西省开采中较广泛应用。
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