Key technologies for surface control of gas dynamic disasters in coal mines and their application by Bo WANG, Fengyin XU, Wenge LIU, Sihua SHAO, Ning WANG, Jiandong WEN, Guoxi CHENG, Zhenghui QU, Yadong XIE, Jiaye HAN, Zhi LI, Bo XU, Weihua YANG, Yiteng ZHANG, Changxing LI

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