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我局地处祖国西北,位于贺兰山矿区。系石炭二迭纪形成的肥焦煤田。局属5个矿中,一个是1919年建矿,其余的4个均为1959年以来建矿投产的。至今一些矿的打眼、放炮仍以手工为主,机械化程度较低。1963～1984年底,共查出煤矽肺病人528例(其
Our bureau is located in the northwest of the motherland, Helan Mountain mining area. Department of Carboniferous Permian formed coke coal field. Bureau of the five mines, one is built in 1919, the remaining four are built since 1959 put into operation. To date, some mines have hit their eyes and their artillery is still mainly hand-made, with a low degree of mechanization. From 1963 to the end of 1984, a total of 528 cases of coal silicosis patients were found