Numerical simulation on the ignition delay time of ventilation air methane in coal mining余明高, 刘欣华, 邓权威130-135
Gas outburst (spray) of epigenetic washout out of control in No. 3 coal seam of Xinjing coal mine汤友谊, 魏若飞, 王润怀, 齐振洪, 王海东140-144
Exploration and practice on structuring integrated gas extraction model in chang- ping mine李宏, 张文清, 栗海涛, 胡志远150-153
Study and application of non-destructive testing technology to firm quality in anchor盛小龙, 袁思军, 罗永磊154-158
Vertical zoning characteristics and significance of primary halo in dongwan gold deposit, Songxian county庞绪成, 王路, 陈丽娜, 庞绪威, 侯广顺, 张睿, 王帅, 徐卫强165-171
Study of calcite single crystals growth with different morphology regulated under biologic monolayer王宝基, 李晓华172-176