4Practice of Drainaging Methane from Goaf by Arranging Pipes in Tail Roadway of Fully - mechanized Caving Faces8-9
8Fire- fighting Technology Practice for Gassy Fully - mechanized Coal Winning Faces Goaf with Multi - air- leakage18-20
9Spraying Dust - suppressor System on Automatic Fully - mechanized Caving Faces Hydraulic Supports21-22
10Causes Analysis for Coal Seam Prone to Spontaneous Combustion in Yima Coal Field and Practice of Comprehensive Preventive Technology26-28
15Application of Electromagnetic Radiation to Continuously Monitor Rock Burst in Huafen Coal Mine39-41
20Probing into Mine Gas Level Appraising Method Used in Different Productive Shifts of Local Coal Mines50-53