4Yao Bridge comprehensive excavation face wet coal mine ventilation and dust removal system and its application12-15
5Large Pressure Stop In Face During Mining Retracement Of The Fire Fighting Technology Research And Application16-18
6Study onManagement CO Overrunning Technology Method in New 107 Coal Face in XinYang Coal Mine19-21,30
11Application of directional fracturing increased permeability technology in No. II -1 Coal Seam35-38