1Research progress of nitrogen-rich gas generating agentsYANG Zhenli, LI Heyi, YOU Changjin, LI ChunleiSpecial Critique1-8,162Simulated experimental study on the applicability of air blasting technology to permeability enhancement of coal seam reservoirWANG Yanlin, WEN HongdaExperiment & Research9-163Effect of sensitizer content on emulsion explosive in plateau environmentZHANG Wanlong, WU Hongbo, CAI Xinyuan, ZHONG Shuai, ZUO Erjian, ZHANG JiangExperiment & Research17-20,254Preparation of a type of low energy density explosiveJIANG Yongtao, DONG Lei, HAN Ruling, JIANG JianExperiment & Research21-255Effect and vibration analysis of carbon dioxide blastingCHENG Xiaobing, HE Shenzhong, WU Hongbo, WU Qiuzhong, LIU Min, ZHANG Xiaokang, SHEN ZhanjunQuestion & Discussion26-306Study on the effect of total charge amount of hole-by-hole blasting on blasting vibration in open-pit miningYAO JinbaoQuestion & Discussion31-347Comparative analysis between digital electronic detonator and traditional industrial detonatorZHANG Liangjie, YE Fei, TANG ZihanQuestion & Discussion35-38