1Application of controlled blasting technology in mountain excavation under complex conditionsZHANC Jican, LIN Fei, LIU Wujun, LIU FenghuaSpecial Critique1-4,82Comparison of blasting effect between on-site mixed explosive and conventional commercial explosiveCUO Jing, SHI Cui, HUANC YingpingSpecial Critique5-83Application status and prospect of coal mine blasting technologyPANC JinlunSpecial Critique9-11,144Analysis of the advantage of low-power detonator with shock-conducting tube in Engineering BlastingZHANC Zhongyi, CUO Ziru, LI HongweiSpecial Critique12-145Study on synthesis of polyisobutylene butane diacid alcohol ester polymeric emulsifierHUANC ZhenghuaQuestion & Discussion15-186Discussion on the key factors affecting the quality of powdery emulsion explosiveBAI JianmingQuestion & Discussion19-217Discussion on the blasting harmful effect controlled technologySONC WeiQuestion & Discussion22-24,298Treatment of nickel-containing wastewater in the production of NHN primary explosiveZHANC Rui, LIU Zhitong, CHEN Wenji, ZHENC Dongdong, CHEN ShanshanExperience Introduction25-299Research on high efficiency gas extraction technology of weak and low permeable coal seam based on preset sieve tube to protect holeYANC JianExperience Introduction30-33,3710Research and application of GT-1A electronic detonatorREN Taichang, ZOU ZhibingExperience Introduction34-37