1Development and planning of China coal resource and quality evaluation standard systemYANG Xiao-yu, LIAN Jin-jing, BAI Xiang-fei1-5,102Composition features and genetic analysis on coal sulfur and ash of No.3 coal field in Triassic North Shaanxi coalfieldZHANG Yong-sheng, HE Dan, LI Jing-qin, CHEN Bo6-103Cascade utilization exploration practice of B group coal of HuainanPanxie mining areaCUI Song-tao11-14,304Research on how the coking time affected the coke thermal strengthFENG Wen-ping15-185Coal characteristics and its industrial path evaluation of No.6 coal seam of Panshui coalmineZHANG Jie19-226Discussion on coordinating mining technology of coal with low calorific value in open pit mineDING Zai-xing23-257The ash system deviation reason research of division machine groove sampling coal samplesLI Hai-yan, HONG Wei, LI Ji-ping26-308Estimation of the Calorific Value of Coal Based on the Proximate AnalysisZHENG Yuan-gang, WU Qiong, LI Jing, MEI Jing-jie, XU Yi, LAN Tian31-33,379Determination of graphite carbon in coal series graphite by infrared absorption methodYANG Mu-dan34-3710Analysis on the effect of accelerator on determination of reflectance of vitrinite of coalZHU Yan38-41,4711Development and experimental study of a new type division machine for coal sample preparationZHOU Lei, XIAO Peng-fei, FU Jie-qin, LI Zhao-di, ZHOU Song-yun42-4712Evaluation of measurement result uncertainty of bomb calorific value in coalMI Juan-ceng, WEI Ning48-50,5313Research on the selection of automatic sampling machine for commercial coal in coal minesLIU Guo-bin51-5314Discussion on the problemsof bias of reciprocating automatic division machine of coal sampleZHOU Yu, ZHOU Xin-wei, SHI Yu-long, WANG Jian, WANG Wei54-55,6715The experience of using flame photometer to determine the potassium oxide and sodium oxidein coal ashXUE Ling-fang56-58,7116Preparation and evaluation of coal based adsorbent used for coal bed methane enrichmentLI Lan-ting, ZHANG Jin-hua59-6317Influencing factor analysis on dehydration effect of HSG series horizontal vibration discharge centrifugeYAO LEI, WEI Song-yang, XU Ying-fang, ZHANG Jian, ZHOU Xue64-6718Reform practice of reducing water content of clean coal in coal preparation plant of Yangquan coal No.2 coal mineGUO Jun68-71 