Changes

'''Bituminous coal''' is a dense [[coal]], usually black, sometimes dark brown, often having well-defined bands of bright and dull material.  It is used primarily as fuel in steam-electric power generation, though substantial quantities also used for heat and power applications in manufacturing and to make coke.  

'''Bituminous coal''' is a dense [[coal]], usually black, sometimes dark brown, often having well-defined bands of bright and dull material.  It is used primarily as fuel in steam-electric power generation, though substantial quantities also used for heat and power applications in manufacturing and to make coke.  

Bituminous coal is the most abundant coal in [[Coal mining|active U.S. mining regions]], since the mining of [[anthracite coal]] or "hard coal" has dropped away. Its moisture content usually is less than 20 percent. The heat content of bituminous coal ranges from 21 to 30 million Btu per ton on a moist, mineral-matter-free basis.  

Bituminous coal is the most abundant coal in [[Coal mining|active U.S. mining regions]], since the mining of [[anthracite]] coal or "hard coal" has dropped away. Its moisture content usually is less than 20 percent. The heat content of bituminous coal ranges from 21 to 30 million Btu per ton on a moist, mineral-matter-free basis.  

The heat content of bituminous coal consumed in the United States averages 24 million Btu per ton, on the as-received basis (i.e., containing both inherent moisture and mineral matter).

The heat content of bituminous coal consumed in the United States averages 24 million Btu per ton, on the as-received basis (i.e., containing both inherent moisture and mineral matter).