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  • coal facts, information, pictures | Encyclopedia articles about coal

    Coal is usually classified into subgroups known as anthracite, bituminous, , Strip mining: A method for removing coal from seams located near Earth's surface

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  • Coal mining - Wikipedia

    The goal of coal mining is to obtain coal from the ground Coal is valued for its energy content, , Technological advancements have made coal mining today more productive than it has ever been , Build-ups of a hazardous gas are known as damps, possibly from the German word "Dampf" which means steam or vapor:

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  • coal - National Geographic Society

    22 Dec 2012 , The open-pit mine has shipped more than 14 billion tons of coal , The roof of the mine is maintained by hydraulic supports known as chocks

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  • Forms - Coal Mining: Public Service Commission, North Dakota

    Consumer Information Meetings & Hearings Newsroom Formal Notices Case Search Laws, Rules, Other , Know What's Below, Call before you dig , Application for Final Release of Bond for Surface Coal Mining and , for Permit to Engage in Surface Coal Mining and Reclamation Operations SFN 10552 (65kb pdf).

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  • EIA Energy Kids - Coal - US Energy Information Administration

    Anthracite accounted for less than 1% of the coal mined in the United States in , In surface mining, large machines remove the topsoil and layers of rock known.

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