The 1986 Tar Sand Symposium was sponsored by the Laramie Project Office of the Morgantown Energy Technology Center, US Department of Energy, and hosted by the Western Research Institute, University of Wyoming Research Corporation, in Jackson, Wyoming, on July 7 to 10, 1986. The 10-session symposium included 36 presentations describing research, development, and commercial application of tar sand technologies of the US, Canada, the Federal Republic of Germany, Switzerland, and Venezuela. Over 80 participants represented the US, Canada, Germany, Japan, and Switzerland. The papers printed in the proceedings have been reproduced from camera-ready manuscripts furnished by the authors. The papers have not been referred, nor have they been edited extensively. All papers have been processed for inclusion in the Energy Data Base.