PDF(956 KB)
Study on the Method of Backward Vertical Striping Sublevel Filling Mining without Sill Pillar
MA Yunqing,WANG Ruixing,HE Shunbin,WANG Hui,YU Changxian,QIU Yunsheng
Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (4) : 67-71.
PDF(956 KB)
PDF(956 KB)
Study on the Method of Backward Vertical Striping Sublevel Filling Mining without Sill Pillar
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