The next overview paper will address itself to the status of tar sands process technologies and residual management. Although tar sands do not represent that vast a fossil fuel energy resource as coal or oil shale, there are known exploited deposits of economic importance. Thus the bitumen impregnated “oil sands” deposits in the Alberta, Province of Canada alone contain several hundred billion barrels of oil in place and represent the world’s largest known reserves of this material, and as many of you know the U.S. has also large deposits of tar sands in Utah. Therefore, tar sands do indeed represent important potential synthetic fuel resources.