Coal mining | World Coal AssociationOver 7212 million tonnes (Mt) of hard coal is currently produced worldwide and 810.5 Mt of brown coal/lignite. Coal is mined by two methods: surface or.mining of coal,Coal mining - Wikipedia, the free encyclopediaThe 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.Methods of Mining. University of KentuckyAccording to the Kentucky Department of Mines and Minerals, 131.8 million tons of coal was mined in Kentucky in 2000; 62 percent (81 million tons) was from.
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