Total oil shale resources in Colorado, Utah, and Wyoming, averaging 15 gallons per ton in beds at least 10 feet thick, are estimated at 1.8 trillion barrels. Of these, about 610 billion barrels are recoverable with present technology. Mining and retorting technology must be improved and environmental problems must be solved before a greater share of this energy resource would be recoverable. The federal Bureau of Mines plans to conduct mining environmental research and geotechnical tests from an 8-foot- diameter shaft in the oil shale deposits to identify the environmental impacts of oil shale development. Specific objectives of this research program are to obtain bulk samples of oil shale, nahcolite, and dawsonite; fragmentation data; rock mass behavior; geologic and hydrologic characteristics; slurry stabilization; and underground environment.