1Experimental study on Cracking Caused by Phase Change of Liquid Carbon Dioxide in Coal Mine Gas DisasterJIANG Zhigang, CHENG Yanying, WANG XiaobingExperiment & Research1-42Postpone Structural Design of a Second Non-electric DetonatorHUANG Yuequan, ZHANG ChengjunExperiment & Research5-7,133Design and Application of Emulsion Explosive for Explosive WeldingWANG Ningxiong, HUANG Ping, DUAN YongjianExperiment & Research8-134Study on the Use of Electronic Detonators in an Open Pit Copper MineSUN Lei, HE Haiqiang, SHEN GuohuaSpecial Critique14-175Application of Digital Electronic Detonator in MineLIAO Ren, DENG YouxiangSpecial Critique18-19,246Discussion on Emergency Rescue Measures for Typical Civil Explosive Fire AccidentsGAO Nana, CHENG HaoQuestion & Discussion20-247The Application of Borehole and Anti-reflection Technology in Rock Cross-cut Coal Uncovering AreaRAN YongjinQuestion & Discussion25-27,388Research and Application of Unmanned Technology of Water-gel Explosive MixtureWANG Meiqiong, HOU Lu, DAI KezhouQuestion & Discussion28-319Directional Blasting Demolition of a 65-meter Brick-concrete Chimney in Complex EnvironmentCHEN Hengdong, LUO Ning, BAO Chuanqi, MA Shengzhang, FANG ZhimeiExperience Introduction32-3410Application Practice of Blasting Technique in Removing High Temperature Nodulation in Rotary KilnXIAO Jin, HUANG Dongping, CAI Jianxin, HUANG Zuzhou, DENG GangExperience Introduction35-38