1Technical analysis of CNAL proficiency testing of coal of year 2006YANG Hua-yu, LI Ying-hua1-42Discussion on identifying tendency of spontaneous combustion of coal by chromatograph with oxygen adsorptionSUI Yan5-73Discussion on improving the accuracy of carbon-hydrogen measurementWANG Ai-wen8-94Discussion on measuring technology of coking indexLIU Hui9-105Discussion on direct measurement of combustible sulfur of coalBAO Jiang, LIU Er-kang, GUAN Rui11-126The influence factors in carbon-hydrogen measurement with BHC-1 semi-automatic carbon-hydrogen measurement equipmentLI Xue, LI Zhe-hong13-14,347Application of PARR 6300 calorimeter in coal quality analysisZHANG Quan-jun15-16,188Preliminary discussion on protective grounding of power system in coal center laboratoryWANG Qi-rong17-189The composed use of sampling devices in coal sample preparationHE Wen-li, LI Chun-yan24-2510Build the recognition of coal quality and strengthen the management to increase quality and efficiencyLIU Jing-hua26-2711Some measures of coal quality testing in power plantsWANG Zhi-yong, ZHANG Xue-ping, XIE Han-shui28-2912Assuring the precision of commercial coal sampling to improve qualification rate of batch coal inspectionDUAN Li-li30-3213The quality management in production process in Laohutai Coal Preparation PlantYI Ya-ru33-3414The research on the coking property of cleaned coal of WangfenggangZHOU Yi-qun35-3615Coal quality prediction and its application in washing of blended raw coalLI Quan-hong37-3916Realizing the reuse of gangue and establishing recycled-economy-type coalmine areaWANG Yan-hong, JIANG Ying40-4217Desulfurization and deashing technology of fine coal pre-combustionJIAO Hong-guang, CUI Jing-yuan, CHEN Qing-ru43-45,4718Steam accumulator and energy savingBIAN Han-song46-4719Factors and countermeasures for influencing calorific value measurement of coalGUO Peng, GAO Yun-feng48-4920The noticed problems of measuring ash fusion temperatureLI Jian-jun50,67 