*Lignite coal brown coal that has a high moisture content and crumb,y by nature which makes it the least desirable form. It has a low energy content *subbituminous lower moisture content and higher carbon content than lignite. Typically used fir electric power plants. *Bituminous (soft coal)low moisture content and high carbon content.
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The subbituminous coal used in Louisiana is low sulfur and has a heat content that ranges from 8,300 to 11,500 Btu/lb. Lignite "A" ranges from 6,300 to 8,300 Btu/lb. and lignite "B" less than 6,300 Btu/lb. The subbituminous coal comes from mines in Wyoming''s Powder River Basin and the lignite from two mines in DeSoto and Red River Parishes.
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