Coal mining, Definition, History, Types, & Facts
By A Mystery Man Writer
Coal mining, extraction of coal deposits from the surface of Earth from underground. Coal has been used since the Bronze Age, 3,000 to 4,000 years ago, and was the basic energy source that fueled the Industrial Revolution of the 18th and 19th centuries.
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Coal mining, Definition, History, Types, & Facts
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Coal mining, Definition, History, Types, & Facts
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