1Strengthen Occupational Protective Supervisory of Coal Miners with the Aid of Big and Powerful Law Weapons1-3
6Regarding Naturally-preserved CO Gas in Specific Coal Seam of Coal Mine and Probing into its Emission Law16-17
8Observation of Fully-mechanized Caving for 1301 Coal Seam Liable to Spontaneous Combustion in Gengcun Coal Mine21-23
9Predicting Water Bursting Point and Water Burst Quantity on Roof Sandstone Seam Containing Water by Fuzzy Clustering Method24-25
12Long Faces and Short Loading Mining Practice for Striking Longwall with Big Inclination Angles30-31