1. Dry Separation of Pyrite from Coal
2. Flotation of Pyrite from Coal;Miller;US Bureau of Mines Report of Investigation 7822,1973
3. Sulfur Reduction Potential of US Coals;Cavallaro;US Bureau of Mines Report of Investigation 8118,1976
4. Sulfur Removal in Fluidized-Bed Combustion;Little;Morgantown Energy Research Center Report MERC/TPR 77/1,1977