Coal miners in parts of the Great Plains in the western part of the U.S. use a kind of mining called ___________ because the process strips away soil and rock.

strip mining
megalopolis
farming
industrial

Question

Coal miners in parts of the Great Plains in the western part of the U.S. use a kind of mining called ___________ because the process strips away soil and rock.
 	
	strip mining
	megalopolis
	farming
	industrial

skyphos · Answer

Well Strip Mining (A.K.A. Surface Mining) is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed. It is the opposite of underground mining, in which the overlying rock is left in place, and the mineral removed through shafts or tunnels. Source: http://en.wikipedia.org/wiki/Surface_mining