The HYTORT Process is the only oil shale retorting process which has been developed specifically to unlock the large Devonian oil shale resources of the Eastern U.S. Using hydrogen at elevated pressure, yields of over 200% of Fischer Assay are obtained from these shale. A joint effort by HYCRUDE Corporation, Phillips Petroleum Company, Bechtel Group, Inc., and the Institute of Gas Technology led to the completion of a comprehensive study of the HYTORT Process in May 1983. This study concluded that commercialization of the HYTORT Process is feasible.