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煤炭部49工程处矿建六队在九龙口矿南风井施工中,4月份月进104米,工程质量全部优良。
In the construction of Sifang well in Jiulongkou mine, the 49 coal mine construction and construction Sixth Team of the Ministry of Construction of Coal Mine made a monthly advance of 104 meters in April and all the works were of excellent quality.