Report presenting new data on the age of the Boulder, Philipsburg, and Idaho batholiths of western Montana.

Report discussing the regional geology, geomorphology, structure, mineral deposits, and details of the sedimentary and igneous rocks of the Placerville Quadrangle in Colorado.

A report regarding the areal geology of the Placerville Quadrangle, located in colorado. This report concerns work done on behalf of the division of Raw Materials of the U.S. Atomic Energy Commission.

Report discussing the coarsely crystalline autunite in granitic rock near Mt. Spokane, Washington. "This report is an abstract of a paper with the same title that is planned for publication in the American Mineralogist."

A report about uranium in Colorado which oxidize to yield U(VI) before reacting significantly with other mineral constituents.

A report about uranium occurring as minerals of the Colorado Plateau ores.

Report discussing the possible existence of pegmatites containing beryllium deposits in the granite stock in the vicinity of Mount Antero and White Mountain, Chaffee County, Colorado.

From Abstract: "A study of the critical factors in the colorimetric determination of total iron in silicate and phosphate rocks, and in other nonmetallic materials is presented. It was desired to ascertain the wavelength of maximum absorbancy, the optimum concentration range for iron, the effect of different substances on the ferrous-o-phenanthroline system, and reproducibility of results."

From abstract: "The isotopic abundances of uranium and the radium activity ratios of 11 samples of uranium ore from the Colorado Plateau have been measured." Experimental data and discussion is included with information regarding the samples used.

The following report covers investigations on sedimentary rocks of Middle Pennsylvanian age in northeastern Oklahoma, southeastern Kansas, and western Missouri. Distribution of uranium and other trace elements in these rocks was studied during 1955 and 1956.

This report summarizes all the information available to the authors on the aluminum phosphate zone on the properties owned by International Minerals and Chemical Corporation.

From abstract: The purpose of this preliminary electrical resistivity investigation of Holiday Mesa, Monument Valley region, San Juan County, Utah, was to determine the feasibility of a detailed survey to delineate channels cut into the Moenkopi formation and filled with sediments of Shinarump conglomerate. These structures are in many places related to the localization of uranium ore.

From abstract: "The transport of matter by fluids percolating through a porous medium is described by setting up a mass conservation equation, analogous to that of hydrodynamics, for each of the substances in question... The results are applied to some selected data from the Texas Panhandle gas field."

Report summarizing the results of geological exploration of the Atkinson Mesa area of Montrose County, Colorado and contains a brief description of the area's geology and ore deposits.

A report about how the U. S. Geological Survey explored the Atkinson Mesa area for uranium and vanadium bearing deposits from July 2, 1951, to June 18, 1953, with 397 diamond drill holes that totaled 261,251 feet.

A report regarding exploration for uranium deposits in the Atkinson Mesa area, Montrose County, Colorado. Concerns work done on behalf of the division of Raw Materials of the U.S. Atomic Energy Commission.

Report describing a fluorimetric procedure for determining about 10^-8 percent uranium with 500-ml water samples.

The following report covers a reconnaissance resource appraisal in pre-Morrison formations, particularly the Shinarump conglomerate, on the Colorado Plateu and adjoining regions during December of 1951. This report is preliminary in nature and the ideas are presented as a hypothesis to be tested by future work.

A report regarding geologic aspects of the resource Appraisal of uranium deposits in Pre-Morrison formations of the Colorado Plateau.

Report discussing the U.S. Geological Survey's efforts to develop "equipment and techniques for rapid field measurement of radioactivity, principally portable survey counters, carborne and airborne equipment, and gamma-ray logging equipment."

A report about the U. S. Geological Survey's program about uranium investigations and geologic mapping in the Monument Valley area, Arizona. A resource appraisal of the area was an inherent part of the program, and is detailed in this report.

Abstract: Uranium occurs in the North Park(?) formation of Pliocene(?) age in the Miller Hill area, about 25 miles south of Rawlins, Carbon County, Wyo. As much as 0. 5 percent uranium is contained in grab samples, but only about 1000 tons of rock are known to contain as much as 0. 03 percent uranium. Beds of brecciated, silicified limestone 3 to 10 feet thick contain the principal concentrations of uranium. Lesser concentrations are found in calcareous sandstone and quartzite. Uranophane, Ca(UOz)2SizO 7 . 6HZO, the principal uranium'mineral, has been deposited in vugs, as fracture and surface coatings, and as a disseminated constituent of the rock. Uranium also occurs in quantities too small to be megascopically visible in dark-colored chalcedony, lime stone, sandstone, and quartzite beds.

Report discussing an investigation of the geology of the Miller Hill area in Wyoming. This area's rocks were shown to contain varying amounts of uranium.

The following report covers geological studies on the USGS and Rainier tunnel areas in the Nevada Test Site.