Report discussing geological investigations in 1947 of the Lower Yukon-Kuskokwin region in Alaska to determine whether radioactive materials existed in the area.

A report regarding radioactivity investigations performed in the vicinity of the Flat, Lower Yukon-Kuskokwim region in Alaska,

A report about a reconnaissance of coal and associated rock made in the anthracite fields of eastern Pennsylvania.

A report regarding the radioactivity of coal and associated rocks in the Anthracite Feilds of Eastern Pannsylvania.

Report discussing the results of a 1952 reconnaissance for radioactive deposits that was conducted in selected areas of eastern Alaska.

A report regarding a reconnaissance for radioactive deposits in Eastern Alaska. Concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

Report discussing the U.S. Geological Survey's investigation of radioactive material found on Mountain View mining property of the Hyder district in southeastern Alaska. No commercially valuable uranium was found in this investigation.

The following report studies samples from radioactive deposits in the Hyder district of southeastern Alaska.

Report discussing the analysis of metalliferous deposits from the Iliamna Lake-Lake Clark region. These deposits contained quantities of silver and hematite, which showed the possible presence of uranium as well.

A report regarding a field investigation done in 1949, made in order to search for radioactive deposits in the Iliamna Lake-Lake Clark Region, in Southwestern Alaska.

A report about radioactivity reconnaissance during 1949 in the vicinities of Ketchikan, Goddard Hot Springs, Chichagof, Funter Bay, and Juneau which revealed no significant concentrations of radioactive materials.

Report discussing the U.S. Geological Survey's reconnaissance for radioactivity in thirty-four metal-mining districts of the San Juan Mountains, Colorado during 1951-1953. General geology of the area, methods of reconnaissance, and results of the reconnaissance are included.

"A reconnaissance for radioactive minerals in the San Juan Mountains, Colo. (fig. 1), was started in the western part by W.S. Burbank and C.T. Pierson in 1951, and continued in 1952 by Pierson, W.F. Weeks, and F.J. Kleinhampl, and in 1953 by Pierson and T.H.W. Loomis of the U.S. Atomic Energy Commission in the western part of the mountains in reconnaissance and in examination of a pitchblende occurrence found by Loomis. The work on which this paper is based was done by the Geological Survey on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission."

From abstract: "The Crevasse Canyon formation and Point Lookout(?) sandstone of Late Cretaceous age and the Baca and Datil formations of Tertiary age were mapped in an area of 168 square miles in the upper Alamosa Creek Valley along the northern edge of the Datil Mountains, Catron County, N. Mex. The investigation was made to determine the potentialities of the area for producing uranium and to learn the geologic controls for the concentration of uranium."

Abstract: "Monazite placers in the western Piedmont of North and South Carolina were explored by the U. S. Geological Survey in 1951-54 and are estimated to contain at least 53,000 short tons of ThO2 and 4,600 short tons of U3O8. None of these deposits is being mined."

Abstract: Pitchblende was discovered in July 1951 in the Alma mining district, Park County, Colo0 , by the U0 S. Geological Survey acting on behalf of the U. So Atomic Energy Commission. The pitchblende is associated with Tertiary veins of three different geologic environments: 1) veins in pre-Cambrian rocks, 2) the London vein system the footwall block of the London fault, and 3) veins in a mineralized area east of the Cooper Gulch fault. Pitchblende is probably not associated with silver-lead replacement deposits in dolomite. Secondary uranium minerals, as yet undetermined, are associated with pitchblende on two London vein system mine dumps, and occur in oxidized vein material.Lfrom dumps of mines in the other environments. Although none of the known occurrences are of commercial importance, the Alma district is considered a moderately favorable area in which to prospect for uranium ore, because twenty-four of the forty-three localities examined show anomalous radioactivity; samples from anomalously radioactive localities, which include mine dumps and some underground workings, have uranium contents ranging from 0.001 to l.66 percent.

Report discussing an investigation of intrusive igneous rocks for radioactivity in New Jersey, New York, and New England during August and September 1951. This was aimed at finding uranium contents of economic significance in these rocks and determining the geological cause for any radioactivity. Results of the investigation are given by region, and a summary is included.

Report discussing the search for uranium in the western United States. Overall, no single deposit of major importance had been discovered at the time of this report's publication, but minable deposits had been discovered in the Colorado Plateau, and in areas of the Dakotas, Wyoming, Idaho, and New Mexico.

From introduction: This report details the seismic measurements by the USGS during the pre-Gnome high-explosives tests near Carlsbad, New Mexico.

The following report describes a laboratory sample splitter, the slotted cone splitter, designed in in the form of 60[degree] cone.

Report discussing a spectrographic determination of contamination in rock samples that had been pulverized with heavy grinding machinery made of alumina ceramic.

Report presenting the results of one part of an investigation of the regional geology of central Florida.

Report discussing the stratigraphy of the Morrison Formation in northwestern New Mexico. From Introduction: "The field work on which this report is based was done during the summer of 1954 when the authors were engaged in investigating the uranium resources of northwestern New Mexico..."

The following report presents a summary of thermochemical data of minerals collected by various contributors.