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自1971年4月分以来,贵州省煤炭工业局六十三处国庆队掘进进尺月月刷新,4月分完成了大巷独头月进240米,5月分26个工作日掘进了巷道260米,6月分树雄心、闯难关,夺取了全岩大巷独头月进308米的新
Since April 1971, Guizhou Provincial Bureau of Coal Industry 63 national team dug into the moon every month to refresh, in April completed the alley alone month into the 240 meters, May 26 working days dug into the roadway 260 Rice, June tree sub-ambitions, Chuang Chuan, captured the whole rock alley alone into the new 308 meters