Study on the methods of testing precision of manual sampling and preparation for commercial coalKONG Ling-po, ZHANG Bao-qing, HAN Li-ting13-16
Study on determination points of vitrinite random reflectance for mixed coal in GB/T 6948-2008LIU Cheng-dong, LIU Ping, ZHANG Xiao-yan20-21,34
Discussion on four-stage method of coal preparation and separated-stage checking of testing varianceSUN Gang23-26
Discussion on the operation of Liebig method in the carbon-hydrogen determination of the coalLI Ting27-30
Discussion on the factor of total moisture during the coal evaluation by calorific valueWEI Guo-qing31-32
Study on the influence of sample's yield rate to determination of grindability index of coalYANG Yi-mei33-34
