Question

When is surface mining generally superior to underground mining?

Answer 1

1. The Difference Between Underground Mining And Surface Mining The process of removal of essential mineral ores or geological substances from soil or sand is called mining. ... Surface mines, or strip mines, are large pits where dirt and rock are removed to expose the minerals.

Answer 2

Answer:

Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place,