If surface mines tend to cause greater environmental impacts, why are they used?
A)Surface mines require the excavation of less rock.
B)Cyanide is not required to process ore from a surface mine.
C)Surface mines are more economical.
D)Subsurface mines are more hazardous to miners.

Question

Quizplus · Accepted Answer

Surface mines are more economical because they require less expensive equipment, less manpower, and less time to mine a given amount of ore compared to subsurface mining methods. While they may have greater environmental impacts, the lower cost often outweighs these concerns for mining companies.

If Surface Mines Tend to Cause Greater Environmental Impacts, Why