"Shown dramatically by the recent crisis involving petroleum and natural gas, shortages and rising prices foreshadow an end to unlimited consumption of natural resources at traditionally low prices. Alleviating these growing shortages of fossil fuels will require increased production from traditional sources and development of new sources. These new sources include tar sand, oil shale, and the in situ combustion of coal. The U.S. tar sand resource and related recovery technology has never been a target of a major research effort by the private sector, perhaps due in part to the fact that most of the known resource is on federal land. Due to this low level of activity by the petroleum industry to develop the domestic tar sand resource, the United States Department of Energy's Laramie Energy Technology Center (LETC) began in 1971 working with the tar sand resource in Utah. The initial work was with the defining, characterizing and analyzing of deposits and the determining of the most promising recovery methods for testing. Specifically the objectives were: 1. To determine the feasibility of in situ oil recovery methods applied to tar sand. 2. To establish a system for classifying tar sand deposits relative to those characteristics that would affect the design and operation of in situ recovery processes. The LETC tar sand activity has created the only multi-disciplined tar sand research staff in the United States. The LETC tar sand program technical staff members and support staff represent approximately 200 man years of tar sand research experience in resource characterization, resource recovery, product treatment, reservoir access, environmental mitigation, and control technology and compliance. The LETC assembled and managed tar sand data base is the only significant compilation of tar sand resource and technology data in the public sector. A program of informal data and information exchange has been developed and is maintained by the LETC technical program management staff between the LETC and all interested private and governmental concerns. The purpose of this report is to document all of the LETC tar sand activity on tar sand deposits in the Uinta Basin in Utah."