Mines, prospects, mining claims, and sample localities of the Dark Canyon Instant Study Area and vicinity, San Juan County, Utah

In conjunction with studies conducted by the U.S. Geological Survey, the U.S. Bureau of Mines conducted a mineral survey in 1979 of known mines, prospect workings, and mineralized zones in the Dark Canyon Instant Study Area, San Juan County, Utah.  This map is a supplement to the Mineral Resources of the Dark Canyon Instant Study Area (Weitz and Light, 1981)., and depicts the locations of mines, prospects, mining claims and sample localities for the area examined by the U.S. Bureau of Mines.