Underground mining can be denied when companies try to get permission to do so. People always have to ask permission.
Drift mining is used when coal seams intersect the surface. They have to go into the mountain sideways to get the coal
Shaft mining is a vertical passageway made in the earth for dinging ore.
Room and Pillar mining is a mining system where the mined material is extracted across a horizontal plane.
Continuous mining is done by a machine. It's basically a machine that makes it easier to mine coal a lot faster
Longwall mining is when an entire long wall of coal is mined in a single slice. Pretty cool.
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