Question

Which type of mining is likely the least harmful to the environment?
a.
surface mining
b.
placer mining
c.
subsurface mining
d.
none of the above


Please select the best answer from the choices provided

A
B
C
D

Answer 1

C

Subsurface (underground) mining generally causes the least surface disturbance and habitat loss compared with surface or placer mining, though it still has environmental risks (e.g., subsidence, water contamination).