The pyritic sulfur content of some bituminous coals can be reduced by gravimetric separation or 'washing'. The extraction of energy and sulfur value contained in the reject fractions is technically feasible. Under favorable conditions the sale of extracted energy and sulfur products will to some degree offset the cost of washing. The purpose of the study was to select, design, and evaluate the high sulfur combustor and sulfur recovery process with the greatest potential for utilizing high-ash, high-sulfur coal reject material produced by the deep cleaning of coal. The report therefore includes preliminary designs and evaluations of several combustion and flue gas treating systems for processing high sulfur fuels drawn off from rejects of coal washing. These fuels, will need to be made up to specifications that depend on; the requirements of available processes for sulfur value recovery, and on the limitations of combustion equipment in respect of ash. The 'High Sulfur Content' (HSC) Fuel specifications can be satisfied by appropriately re-combining selected portions of reject material from deep cleaning of coal. Four specimen HSC Fuel compositions are tabulated along with product and cost data on six processing systems for these fuels. (Author)