mining alluvial deposit
change of mining technique from open pit mining to underground mining
full-mechanized caving mining with large mining he
Full-mechanized Caving Mining with Large Mining Height
fully mechanized caving mining face with extra long mining length
fully mechanized mining with great mining height
mining damage due to mining
mining hight fully mechanized mining
the change from underground mining into open mining
transition from open cast mining to underground mining
underground Mining and Open Pit Mining
Alluvial
冲积的
冲积
砂矿
冲积扇
冲积性多泥沙游荡型河流
淤积层
冲积锥