Over the past two years the Oil Shale and Tar Sand Programs of the US DOE (Department of Energy) have shifted emphasis from a basic research approach to an applied research and development approach. The 38 papers and poster sessions presented here cover the following topics: oil shale processing (hydroretorting, pyrolysis, coking, cracking, and the ROPE process,6227 ); tar sand processing (solvent extraction, pyrolysis, hydropyrolysis, ROPE process, and hot water processing,6227 ); design of oil shale and tar sand processing plants; reaction kinetics and mathematical modeling of processes; spent shale utilization; economics; and chemical composition and analysis. Papers have been indexed separately for inclusion on the data base. (CK)