why bituminous is the best coal
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It is of higher quality than lignite coal but of poorer quality than anthracite. ... The heat content of bituminous coal ranges from 24 to 35 megajoules per kilogram (21 to 30 million British thermal units per short ton) on a moist, mineral-matter-free basis.
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It is of higher quality than lignite coal but of poorer quality than anthracite. ... The heat content of bituminous coal ranges from 24 to 35 megajoules per kilogram (21 to 30 million British thermal units per short ton) on a moist, mineral-matter-free basis.
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