All coal faces at the northen of Datong Mining Bureau Yungang Mine because of their development process of geologic structure have to down steep seams and pass through faults.

 
  • 针对大同矿务局云冈矿井田北部断层等地质构造发育的特点,从开采方法和采煤工艺上进行了探讨和论证。
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