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Summary of Conference on the Toxicity of Carbon 14 Held at Argonne National Laboratory, January 15-16, 1952

Description: Report issued by the Argonne National Laboratory discussing the Conference on the Toxicity of Carbon 14. At the outset of the meeting it was emphasized that the group was brought together to discuss work which had a bearing on the toxicity of C14 compounds used either clinically or industrially, and the hope was expressed that the group might be able to reach some conclusions on these matters. This report includes tables.
Date: March 1952
Creator: Brues, A. M. & Buchanan, D. L.

A Spectrographic Method for Determining Trace Amounts of Lead in Zirconium and Other Minerals

Description: A report about spectrographic determination of lead in zircon and in some other minerals has been made by the U. S. Geological Survey to provide data in a study of the age of the rocks that contained these particular minerals. Overall, standard spectrographic procedures were applied, including the split-filter method for calibrating the photographic emulsion.
Date: March 1952
Creator: Waring, C. L. & Worthing, Helen

Beryl Resources of the Black Hills of South Dakota

Description: Report issued by the U.S. Bureau of Mines on the beryl deposits in the northern Black Hills of South Dakota. The properties and quantity of the beryl samples were evaluated. Maps, illustrations, and tables are included in the report.
Date: March 1952
Creator: Tullis, Edward L.

Uranium-Copper Deposits Near Copper Canyon Navajo Indian Reservation, Arizona

Description: From introduction: During the summer of 1951, Navajos conducted John W. Chester, Russell C. Cutter, and E. V. Reinhardt, Grand Junction Exploration Branch, U. S. Atomic Energy Commission, to a copper deposit in Copper Canyon. Little radioactivity was noted, and no further work was done in the area at that time. In October 1951, the same group of Navajos reported the discovery of uranium ore in another portion of the same area. The site was visited by Cutter who noted that an excavation made by the Navajos had disclosed a 3-foot thickness of low-grade uranium ore. In November 1951, Cutter again visited the area and observed that the Navajos had opened a 5-foot face of good ore.
Date: March 13, 1952
Creator: Reinhardt, E. V.

Jurassic Rocks of the Zuni Uplift, New Mexico

Description: From abstract: The stratigraphy and structure of the Jurassic rocks of the Zuni Uplift and adjacent areas of northwestern New Mexico were studied by geologists of the U. S. Atomic Energy Commission during the Spring and Summer of 1951. Emphasis was placed upon deposits in the vicinity of Grants, New Mexico.
Date: March 1952
Creator: Rapaport, Irving; Hadfield, Jonathan P. & Olson, Richard H.

Carnotite Deposits in Craven and Coal Canyons, Fall River County, South Dakota

Description: From introduction: This report presents, in tabular form, the results of radiometric and geologic reconnaissance made in the Craven and Coal Canyon areas during the period November 27 to December 7, 1951, in accordance with plans outlined in Trace Elements Memorandum Report 152, "The carnotite prospects of the Craven Canyon area, Fall River County, South Dakota." Assay data from the claims examined by L. R. Page and J. A. Redden are not included in this report. This work was done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.
Date: March 1952
Creator: Bales, W. E. & Erickson, Ralph Leroy

Preliminary Results of Radiometric Reconnaissance of Parts of the Northwestern San Juan Mountains, Gunnison, Ouray, San Juan, San Miguel, and Dolores Counties, Colorado

Description: From abstract: A reconnaissance radiometric survey of parts of the northwestern San Juan Mountains has revealed the occurrence of uranium-bearing ores in several mining districts in Ouray and San Juan Counties, and the occurrence of thorium-bearing veins in southwestern Gunnison County.
Date: March 1952
Creator: Burbank, W. S. & Pierson, Charles Thomas

Limiting Conditions for Jet Formation in High Velocity Collisions

Description: This report discusses the high-velocity collisions of two identical solid plates driven by high explosives. The collision data employs dural, mild steel, brass and lead, as well as experimenting with jetless and jet-forming collisions.
Date: March 27, 1952
Creator: Walsh, J. M.; Shreffler, R. G. & Willig, F. J.

Hydrogen Peroxide Analysis and Decomposition in Chromate Solutions

Description: Abstract: "A novel procedure employing ion exchange resins was developed to separate chromate ions from hydrogen peroxide, permitting, permitting the subsequent analysis of peroxide to determine its decomposition in sodium chromate solutions. At high pH's, peroxide was absorbed anionically on the ion exchange resins along with chromate. By selecting a resin which would be effective at nearly neutral conditions, chromate was satisfactorily separated from peroxide. It was found that the rate of peroxide decomposition in slightly alkaline sodium chromate solutions was dependent on temperature, pH, aeration, and chromate concentration. No significant effect on decomposition was caused by visible light."
Date: March 17, 1952
Creator: Rynasiewicz, Joseph & Ryan, J. W.

Hydroxides as Moderator Coolants in Power-Breeder-Reactors

Description: The following report describes work that was udertaken to determine whether a homogeneous breeder reactor using an alkili metal hydroxide solution is capable of breeding.
Date: March 26, 1952
Creator: Dayton, Russell Wendt & Chastain, Joel W.

Boundary Disturbances in High Explosive Shock Tubes

Description: Abstract: High Velocity disturbance are observed to propagate in advance of the plane shock front along the walls of a high-explosive-operated shock tube. Experiments were performed which indicate that the disturbance proceeds at a constant velocity relative to the shock front, and carries a considerable amount of energy as evidenced by its ability to penetrate metal plates. The velocity of a similar disturbance observed along a rod placed on the axis of the shock tube normal to the plane shock front was essentially independent of the rod material and diameter. This phenomenon was observed when shock tubes were filled with argon or chlorine but was absent when air or helium was used.
Date: March 31, 1952
Creator: Shreffler, R. G.

Effects of High Intensity Radiant Energy on Skin: [Part] 1. Type of Energy and Its Relation to Energy Delivery Rate

Description: Abstract: Burn lesions were produced by radiant energy, 3100 A to 22000 A, on depilated rat skin. The gross and microscopic pathological changes so caused are described and correlated with the amounts of incident energy and the rate of energy delivery. Within the limits studied, 0.2 to 64 cal./cm.2/sec. and 0.1 to 8.0 seconds, it was found that increasing the rate of energy delivery lowered the amount of energy required to produce a specified degree of tissue injury. The tissue changes were in many respects similar to those described for contact burns of the skin of rats and other animals. The findings suggest the action of such intensities of this spectrum of radiant energy is essentially of a thermal nature.
Date: March 17, 1952
Creator: Sheline, Glenn E.; Alpen, Edward L.; Kuhl, P. R. & Ahokas, A.