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Abstract Technologies such as preventing support tilting, temporary false roof, marithan injection, the width of the machine path changing, the fully mechanized mining face can be safely mined under large-scale faults and complicated conditions, improving coal mining efficiency, reducing the number of maintenance of moving equipment, the recovery mining of Wangcun Mine was completed in 8128, 8126, 8124 and 8303 work face, a total of 5.43 million tons of raw coal was recovered, with good economic benefits.
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