Conversion of the organic fraction of municipal solid waste to a powdered fuel offers a number of advantages for improving both the quality and marketability of the product. Cellulose embrittlement processes have been developed to convert the organic fractionof MSW to a powder. This project concentrated on improving the embrittlement process developed in an earlier study and characterizing the properties of the powdered fuel obtained. Over 363 kg. (800 lb) of powdered fuel were processed for characterization studies. The processing procedures used for converting the RDF from the Americology plant in Milwaukee is described. In the initial phase of this project, the physical, chemical and thermal properties of the powdered fuel were evaluated. Particle size distribution, morphology and density were measured. Proximate, ultimate and ash analysis were determined and TGA, DTA and heat content were established. In the second phase of this project, the combustion characteristics of the powder alone and mixed with powdered coal and oil were extensively evaluated. This work was conducted in fulfillment of Grant No. R-806535010 by the University of Dayton Research Institute under the sponsorship of the U.S. Environmental Protection Agency.