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Bituminous Coal Grain Size

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Bituminous coal coal classification Britannica

Highvolatile bituminous coal is classified on the basis of its calorific value on a moist ashfree basis ranging from 24 to 33 megajoules per kilogram 10500 to 14000 British thermal units per pound while mediumvolatile and lowvolatile bituminous coals are classified on the basis of the percentage


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