Geochemistry,petrology,and palynology of the Princess No.3 coal,Greenup County,KentuckyMadison M.Hood, Cortland F.Eble, James C.Hower, Shifeng Dai633-651
Using yttrium as an indicator to estimate total rare earth element concentration:a case study of anthracite-associated clays from northeastern PennsylvaniaXiaojing Yang, Daniel Kozar, Daniel Gorski, Anthony Marchese, James Pagnotti, Rusty Sutterlin, Mohammad Rezaee, Mark S.Klima, Sarma V.Pisupati652-661
Characteristics and geological significance of germanium in Taiyuan coal formation of Huainan Coalfield,Anhui,ChinaDun Wu, Wenyong Zhang, Guijian Liu, Run Zhan, Guangqing Hu662-675
Stress-induced trend:the clustering feature of coal mine disasters and earthquakes in ChinaBo Chen676-692
Study on the critical stress threshold of weakly cemented sandstone damage based on the renormalization group methodZhaoyang Song, Hongguang Ji, Zhiqiang Liu, Lihui Sun693-703
Analysis of fracture mechanism for surrounding rock hole based on water-filled blastingJun Wang, Jingxuan Yang, Fengfeng Wu, Tengfei Hu, Shams Al Faisal704-713
Parameter inversion and location determination of evolutionary weak layer for open-pit mine slopeZhao Hongze, Wang Dongyu, Ma Ming, Zheng Kaihui714-724
Mechanical performance study of the retractable pier column after stiffeningYi Zhang, Xiaoye Wang, Liming Zhao, Jie Liu, Nana Wang, Yingying Ding725-739
Height prediction of water-flowing fracture zone with a genetic-algorithm support-vector-machine methodEnke Hou, Qiang Wen, Zhenni Ye, Wei Chen, Jiangbo Wei740-751
Atmospheric disturbance on the gas explosion in closed fire zoneYulong Duan, Shuo Wang, Wenhe Wang, Kai Zheng752-765