Mountaintop removal mining
Mountaintop removal mining (MTR), also known as mountaintop mining (MTM), is a form of surface mining at the summit or summit ridge of a mountain Coal seams are extracted from a mountain by removing the land, or overburden, above the seamsThis method of coal mining is conducted in the Appalachian Mountains in the eastern United Stat Explosives are used to remove up to 400 vertical ,...