Research Boring Technique of long Borehole along Coal Seam in Zhangji Coal MineDONG Zheng-kun, YANG jian-ming1-2
Auditing Evaluation of Economic Responsibility During the Term of Service of Coal EnterprisesWANG Xiu-ling18-19
Removing Practice of Powered Support in Fully Mechanized Mining Face with Big Dip AngleLI Yuan-chao, TANG Jie-yue, YANG Shan-chong20-21