4Research on Digital Image Processing of Coal Flotation Froth(Ⅱ)——The square neighbor algorithm for extracting features of digital coal flotation froth image233-236
5Experimental Research of Load-Bearing and Deformation Characteristics of Rigid Pile Composite Ground237-241
9Discovery and Geological Significance of Platinum Group Elements in Coals from Southwestern Guizhou 258-261
10Fuzzy Optimum Selection and Analysis for Optimization and Evaluation of Mine Ventilation Systems262-266
13Distribution of Physiochemical Field of Pan-Water-Rock System in Eastern Pacific Ocean Basin275-280
14Geochemical Features of Hazardous Elements and Cleaning Potential of Coal from Xinzhouyao Coal Mine281-284
19Drawing System of Low Dilution and Dissipation Based on Heterogeneous Degree of Caved Ore and Rock 302-305