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subbituminous gold typically contains carbon

  • Glossary of Mining Terms rocksandminerals.com

    Cage In a mine shaft, the device, similar to an elevator car, that is used for hoisting personnel and materials. Calorific value The quantity of heat that can ...

  • Glossary of Mining Terms Kentucky Coal Education

    A. Abutment In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch ...

  • Coal Wikipedia

    German Classification English Designation Volatiles % C Carbon % H Hydrogen % O Oxygen % S Sulfur % Heat content kJ/kg; Braunkohle: Lignite (brown coal)

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    Comprehensive and meticulously documented facts about energy. Learn about the science of energy, the pros and cons of different energy technologies, public policies ...

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