From abstract: "Age determinations by the Larsen method are reported for the four Paleozoic plutonic series of New Hampshire."

This report discusses an apparatus that has been constructed to record the thermoluminescence of a mineral in the form of a powder or a single crystal at temperatures from -100 C to +400 C.

A report about a previously published semiquantitative spectrographic method that was modified by applying microphotometric scanning of the spectrograms in such a way that the operator was free to do other work during a large part of the scanning time.

A report about uranium on the Colorado Plateau which is related to coalified wood, crude oil, carbonaceous shale, and carbonaceous matter of unknown origin.

From abstract: The Legin group area comprises five privately owned claims, nine Government claims, and some public land. The area is in parts of secs. 28 and 29, T. 43 N., R. 19 W., New Mexico principal meridian, San Miguel County, Colo. It is about 45 miles from the Government mill at Monticello, Utah, and 50 miles from the Vanadium Corporation of America mill at Naturita, Colo. The Legin group area has yielded a total production of more than 18,000 short tons of carnotite ore that averaged 0.32 percent U30 and 2.5 percent V 205 . Most of this production was accomplished during the years from 1935 to 1944, and from 1949 to October 1951.

Report discussing the exploration of the Upper group area in San Miguel County, Colorado, and the investigation of carnotite ores produced from this area.

Report discussing the properties of coffinite, a uranous silicate mineral. Coffinite was newly discovered at the time of this report's publication.

A report about a comparison of the uranium content of plants and soils as prospecting guides for uranium made for areas of known mineralization in Fall River County, South Dakota.

From Abstract: "This paper describes a rapid routine procedure for the determination of phosphorous in the presence of vanadium. Vanadium is reduced with formic acid prior to precipitation of phosphorous as ammonium phosphomolybdate and the ammonium phosphomolybdate is weighed as such."

From Abstract: "A routine method is given for the determination of potassium and sodium in siliceous, argillaceous, and phosphatic rocks using the Beckman flame photometer 10300."

Abstract: "A procedure for the determination of thorium in the concentration range of 0.2 to 10 parts per million ThO2 in felsic or mafic rocks. Thorium is extracted by mesityl oxide and purified by iodate precipitation from nitric acid medium containing tartaric acid and hydrogen peroxide. The thorium is determined spectrophotometrically with thoron from meso-tartaric acid medium."

Report discussing fluorimetric determination of separated microgram amounts of uranium from various metal ions, and the use of alkali carbonate separation for analysis of shales, lignites, and monazites.

The following report is a statement of the Geological Survey's progress on the investigation of the fundamental geology, mineralogy, and geochemistry of uranium and other radioactive materials with the intention of discovering and delimiting areas favorable for the future production of uranium and other radioactive ores. This report covers the period from December 1, 1956 to May 31, 1957.

From foreword: This report is a statement of progress during a six-month period on investigations of radioactive materials in the United States.

The following report provides a geological map of the Deadhorse Flat quadrangle, Nye County, Nevada.

A report about the Lemhi Pass area in the Beaverhead Mountains, Lemhi County, Idaho, and Beaverhead County, Montana, which was undertaken to determine the area as a potential source of thorium.

From introduction: This report describes the general geologic setting, the occurrences of uranium or radioactivity in the Fall Creek, Idaho area and adjacent areas, the probable nature of the mineralization and origin of the deposits, and the estimated reserves of uranium-bearing rock.

Report discussing the geology and uraniferous carbonaceous rocks found in the Bear River of the Fall Creek area of Bonneville County, Idaho. The report provides information regarding the geology of the area, uranium occurrences, distribution of uranium and other elements in carbonaceous materials, origin of uranium occurrences, core drilling results, and inferred reserves.

Report discussing the geology of the Calamity Peak area of Custer County, South Dakota. This area "was mapped to determine the relationship between the granite-pegmatite complex and the pegmatites containing beryl and other industrial minerals."

From introduction: The purpose of this report is to describe the geology of the rocks in the different sedimentary basins in relation to problems of disposal of liquid radioactive wastes in the ground.

Abstract: Ground-water test well 2 was drilled to a depth of 3,422 feet with rotary and cable tool drilling equipment.

From introduction: The geologic studies in the U12e.04 tunnel within the Nevada Test Site were conducted for the purpose of determining the structure and chemical and physical properties of the tuffs exposed in the tunnel.

Report discussing the Shinarump Conglomerate, the channels leading to this conglomerate, and the uranium minerals which localize at the base of this conglomerate via the channel sediments. The geology of the area, information on the channels, and information regarding the localization of uranium in channels are included.

A report regarding localization of uranium minerals in channel sediments at the base of the Shinarump conglomerate, Monument Valley, Arizona. This report concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.