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一、 事故经过1999年8月26日，某铁矿井下分矿职工刘某、黄某在-240m打补充平巷，刘某操作风机，黄某领钎，打完第一遍炮孔便放了炮，等炮烟排净后他们开始打第二遍炮孔。当打到第三个炮眼时，点完眼后，黄某退到刘某身后约3m处洗手，这时从迎头左侧顶部突然冒落下一块1.5m3的
First, the accident After August 26, 1999, an iron ore mine sub-mine workers Liu, Hwang fill -240m Lane Lane Lane, Liu operation fan, Hwang led drill, hit the first shot of the hole will be put The guns, and other smoke Pai Pai net they began to play the second hole. When you hit the third hole, after finishing his eyes, Hwang back to about 3m behind Liu wash their hands, then suddenly from the top of the head left to take the next piece of 1.5m3