The application of ultra-fine fly ash in the seal coating for the wall of underground coal mine

2016 ◽  
Vol 27 (4) ◽  
pp. 1645-1650 ◽  
Author(s):  
Huiping Song ◽  
Jianqiang Liu ◽  
Fangbin Xue ◽  
Fangqin Cheng
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