Report issued by the U.S. Bureau of Mines discussing the costs and methods of uranium mining in San Juan County, Utah. History, geology, and production of the uranium mines are presented. This report includes tables, maps, illustrations, and photographs.

This is a map, scale 1:24,000, of the photogeology and surface geology of the Colorado Plateau Area.

Report discussing a study in which the plant analysis method of botanical prospecting for concealed uranium deposits was employed in the Deer Flat area, White Canyon district, San Juan County, Utah. The study took place from May to July, 1953.

An interim report regarding botanical prospecting for uranium in the Shinarum conglomerate at Deer Flat, in the White Canyon District, San Juan County, Utah. This report concerns work done on behalf of the Division of Raw Materials of the U.s. Atomic Energy Commission.

This is a photogeologic map, scale 1:24,000, of Carlisle-15 in San Juan County, Utah.

The following report covers the study of the area described in this report that is part of the White Canyon mining district, San Juan County, Utah. Upon this investigation, uranium deposits were discovered and analyzed.

A report discussing a study made of the Hite Section of the Glen Canyon Dam Immersion area to evaluate uranium occurrences and potentials.

Preliminary geologic map of the Verdure 4 SW quadrangle, San Juan County, Utah

Photogeologic map of the Elk Ridge-5 quadrangle, San Juan County, Utah

This is a photogeologic map, scale 1:24,000, of Carlisle-10, in San Juan County, Utah.

This report gives preliminary results of detailed mapping done during the 1952 field season, summarizes habits of the uranium deposits, and presents guides that may be useful in exploring for additional deposits.

Surface cleanup activities at the Mexican Hat UMTRA processing site are nearing completion. Ground Water contamination at the Mexican Hat site is a result of uranium milling operations. The extent of residual process water has been identified, and it is limited to the uppermost aquifer in the vicinity of the site. Deeper aquifers are not affected because of an upward hydraulic gradient and the presence of a confining unit (the deeper aquifers are protected by hydrogeologic isolation). The uppermost unit is returning to its pre-milling, mainly unsaturated state. The unit that contains the contaminated water is not a ground water resource because it qualifies as Class III (limited use) based on limited yield. Ground water in the uppermost unit is currently not used and is not anticipated to be used as a ground water resource. The nearby San Juan River and a converted oil exploration well provide all of the water needs for the area. There are no current threats to human health or livestock; and, because the zone of contamination does not represent a ground water resource, none are anticipated in the future. There are, however, seeps where contaminated water is exposed at land surface. The seeps create potential …