1. Geochemistry, petrology, and palynology of the Princess No. 3 coal, Greenup County, Kentucky

   • Madison M. Hood
   • Cortland F. Eble
   • Shifeng Dai

   Research Article Open access 07 February 2020 Pages: 633 - 651

   

2. Using yttrium as an indicator to estimate total rare earth element concentration: a case study of anthracite-associated clays from northeastern Pennsylvania

   • Xiaojing Yang
   • Daniel Kozar
   • Sarma V. Pisupati

   Research Article Open access 17 April 2020 Pages: 652 - 661

   

3. Characteristics and geological significance of germanium in Taiyuan coal formation of Huainan Coalfield, Anhui, China

   • Dun Wu
   • Wenyong Zhang
   • Guangqing Hu

   Research Article Open access 24 November 2020 Pages: 662 - 675

   

4. Stress-induced trend: the clustering feature of coal mine disasters and earthquakes in China

   • Bo Chen

   Research Article Open access 22 July 2020 Pages: 676 - 692

   

5. Study on the critical stress threshold of weakly cemented sandstone damage based on the renormalization group method

   • Zhaoyang Song
   • Hongguang Ji
   • Lihui Sun

   Research Article Open access 15 April 2020 Pages: 693 - 703

   

6. Analysis of fracture mechanism for surrounding rock hole based on water-filled blasting

   • Jun Wang
   • Jingxuan Yang
   • Shams Al Faisal

   Research Article Open access 02 June 2020 Pages: 704 - 713

   

7. Parameter inversion and location determination of evolutionary weak layer for open-pit mine slope

   • Zhao Hongze
   • Wang Dongyu
   • Zheng Kaihui

   Research Article Open access 13 June 2020 Pages: 714 - 724

   

8. Mechanical performance study of the retractable pier column after stiffening

   • Yi Zhang
   • Xiaoye Wang
   • Yingying Ding

   Research Article Open access 04 August 2020 Pages: 725 - 739

   

9. Height prediction of water-flowing fracture zone with a genetic-algorithm support-vector-machine method

   • Enke Hou
   • Qiang Wen
   • Jiangbo Wei

   Research Article Open access 14 October 2020 Pages: 740 - 751

   

10. Atmospheric disturbance on the gas explosion in closed fire zone

    • Yulong Duan
    • Shuo Wang
    • Kai Zheng

    Research Article Open access 05 February 2020 Pages: 752 - 765

    

11. Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

    • Subhajit Aich
    • Dibyajyoti Behera
    • Sumantra Bhattacharya

    Research Article Open access 27 March 2020 Pages: 766 - 777

    

12. Effect of coal mine organic aerosol on the methane/air lower explosive limit

    • S. V. Valiulin
    • A. A. Onischuk
    • S. N. Dubtsov

    Research Article Open access 28 March 2020 Pages: 778 - 786

    

13. Effect of ultrasonic irradiation on particle size, reagents consumption, and feed ash content in coal flotation

    • Hossein Ebrahimi
    • Mohammad Karamoozian

    Research Article Open access 21 March 2020 Pages: 787 - 795

    

14. Characterization of bio-coal briquettes blended from low quality coal and biomass waste treated by Garant^® bio-activator and its application for fuel combustion

    • Anggoro Tri Mursito
    • Widodo
    • Danang Nor Arifin

    Research Article Open access 09 April 2020 Pages: 796 - 806

    

15. Co-pyrolysis of South African bituminous coal and Scenedesmus microalgae: Kinetics and synergistic effects study

    • Bothwell Nyoni
    • Sifundo Duma
    • Shanganyane P. Hlangothi

    Research Article Open access 21 March 2020 Pages: 807 - 815

    

16. Evolution in the formation of graphene nanocapsules from coal tar pitch

    • D. M. Puente-Siller
    • A. E. García-Castillo
    • A. Perea-Garduño

    Research Article Open access 05 April 2020 Pages: 816 - 824

    

17. Hydrochemical characteristics and water quality evaluation of shallow groundwater in Suxian mining area, Huaibei coalfield, China

    • Hao Yu
    • Herong Gui
    • Yaru Zhang

    Research Article Open access 26 September 2020 Pages: 825 - 835