Study on the Formation of Overburden Layer during the Transition from Open-pit to Underground Mining in Xiaowanggou Iron Mine

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Study on the Formation of Overburden Layer during the Transition from Open-pit to Underground Mining in Xiaowanggou Iron Mine

LI Nan, REN Feng-Yu, ZHAO Yun-Feng, CHANG Shuai

Metal Mine . 2010, (12): 9 -11 .