Some coal mines are called strip mines because:
A) the carbon is stripped from the hydrogen during burning of the coal
B) the uranium is separated stripped) from the coal
C) large underground machines strip away thin seams of coal
D) a mine on the surface mines a single long strip at any time

Question

Quizplus · Accepted Answer

Strip mines are a type of surface mining where a single long strip of earth is removed at a time to extract coal, rather than mining underground. This method is used when the coal seam is close to the surface.

Some Coal Mines Are Called Strip Mines Because