1Discussion to build fully mechanized coal mining face with annual coal production of over 10 million tZHAO Hong-zhu, YANG Qi-zhen4-62Application of coal mining face connection and expansion method to fully mechanized coal mining faceLI Wan-gen7-83Discussion on choice of CST driving methodZHANG Jun, JIA Chun-yu8-114Principle and design of mechanism for pin slot speed reducer12-135Present status and development on heavy medium cyclone coal preparation technology for slime14-166Water saving from sources - comments on several water saving measures for design of water drainage and water supply system17-187Blasting and dismantling design of reinforced concrete chimney in narrow ground placeZHANG Ying-cai19-218Comments on several new regulations for loaded shaft bar part in new steel codeLU Shou-wei, YANG Jun22-239Discussion on foundation design of steel structure workshop buildingPANG Gang, WANG Lei23-2410Some issues to be attention to in curtain designZHENG Si-qi, XU Chuan-zhi25,3411Innovation and practice of combined technical reconstruction for Ciyang Mine in Lingwu Mining AreaLI Yu-min, LI De-rong26-2812Mine shaft sinking technology to open seam with potential outburst dangerXU Hui-dong, WANG Min-jian29-3213Analysis on key technology for mine shaft full face boring method in deep thick alluviumHU Shao-long, YAO Zhi-shu32-3414Comments on design and construction of late concrete pouring zoneLI Yu-lan35-3615Discussion on layout of wide coal mining face in No. 8 seam of Datong No. I MineHE Hua37-3816Discussion on fully mechanized shortwall coal mining in Datong Mining AreaHUANG Qing-guo, ZHAO Jun39-4017Discussion on gas control at corner of air return way in fully mechanized coal mining face41-4318Discussion on application of water supply adjustment system with three momentum and frequency conversionYAN Jian-bing, SHI Xue-peng43-4519Existing problem and solution to fine coal stored in fine coal bunkerSONG Xian-wen46-4720Discussion on improvement of mine environment weather47-49 