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Coal Mining

Across
the gradual caving in or sinking of an area of land, which can be caused by the collapse of Coal Mines
a combustible black or brownish-black sedimentary rock, which is used as a source of energy
A type of Underground Mining in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars
This is a source of water that is typically polluted due to digging coal mines
Down
The Gas found in underground pockets around coal beds
A General grouping of many types of Coal Mining, all of which include digging underground
The process of mining for Coal by using machinery to dig up sections of the earth
The Greenhouse Gas released when coal burns
Gas released from burning coal that can cause acid rain