This final technical report documents the technical effort completed over roughly two year period by UCC Research Corporation (UCCRC) on the research program sponsored by the Department of Energy (DOE) to recover the energy value of coal preparation plant wastes by the Mild Gasification Process. The major tasks of the project included a literature survey to characterize current and potential future techniques available for managing coal wastes in an economical and environmentally sound manner; selecting and characterizing feedstocks to be tested in the Mild Gasification Process Development Unit (MGU,5377 ); building and modifying, if necessary, the MGU; conducting the test runs according to a test plan; and analyzing the test results to assess system performance and to recommend if any further process research and development is warranted. About 50% of the coal liquids were obtained during the first hour and 90% of the liquids were collected within three hours of coal residence time. The optimum coal pyrolysis temperature for best liquid yield and liquid quality was found to be about 1100/sup 0/F, which is in agreement with most workers in the pyrolysis field. The <600/sup 0/F B.P. fraction is unique in that it contains mostly monocyclic (20.5%) and dicyclic (71.5%) aromatic material and thus is an excellent precursor for high density fuel. 44 refs.