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 Coal
is an abundant fossil fuel that has been formed from the decay of peat over
hundreds of millions of years. Coal can be found in
different qualities. The lowest grade is lignite and the highest grade
is hard coal (anthracite). Coal can be extracted from an open mine or from
underground mines. Exchanges associated with coal mining vary from mine
to mine depending on natural conditions, extraction technology,
equipment used as well as operational practices. Open mining of coal may lead to
severe destruction of natural landscapes unless precautions are followed.
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Abandoned coal strip mine
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Truck at coal mine
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Loading dump truck with coal
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