Chemical Analyses and Physical Properties of 12 Coal ...
Department of Energy standard coal analyses_____ 15 Moisture, ash, and heat of combustion (heat value)_____ 15 ... The area being investigated continues to be an important coal mining center; it is loed 10 km or about 6 mi westsouthwest of Pocahontas, Va., in the Pocahontas coal field (Trumbull, 1960). We .