Study on the Extension Mining Method without Expansion Side Slope during Transition from Open-pit to Underground Mining

Welcome to Metal Mine! Today is Share:

Study on the Extension Mining Method without Expansion Side Slope during Transition from Open-pit to Underground Mining

XU Shuai, Li-Yuan-Hui, GAO Zhen-Ling, Dai-Xing-Hang

Metal Mine . 2011, (08): 41 -44 .