About 60% of the world's coal is mined via deep shaft extraction. The other 40% is recovered by one of three surface mining techniques: area mining, contour mining, mountain top removal mining.
it is recoverd by mines
I would tell you but you are a butthead.
A person who gets coal from under the ground is typically called a coal miner.
Mines in which the coal was mined.
Coal and lead can be mined in Iowa.
coal, petroleum
deep mining is how coal removed
Bituminous coal and limestone are mined in Indiana.
Oil, coal, and gas. Oil is pumped out of the ground, coal is mined, and gas is also pumped
its mined by coal im 99.9% sure
Coal is mined principally in Orissa
Coal is mined principally in Orissa