The goal of coal mining is to obtain coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity.
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Early coal extraction was small-scale, the coal lying either on the surface, or very close to it. Typical methods for extraction included drift mining and bell pits.
Experiencing both boom and bust, the coal-mining industry has affected the lives of thousands of people in northern and central Alabama.
Coal fields in Arkansas are located in the Arkansas River Valley between the western border of the state and Russellville (Pope County) an area only about thirty ...
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Like farming, mining is one Illinois economic activity carried out to a much greater extent outside the Chicago metropolitan area than inside it.
COAL MINING DISASTERS Always one of the most hazardous occupations, coal mining was particularly perilous in Oklahoma. During the 1867 to 1906 period ...
auger mining, method for recovering coal by boring into a coal seam at the base of strata exposed by excavation. Normally one of the lowest-cost techniques of mining ...