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  Partner: UNT Libraries Government Documents Department
 Decade: 1940-1949
Preparation and use of Ammonium Diuranate in the Ether Extraction Process

Preparation and use of Ammonium Diuranate in the Ether Extraction Process

Date: February 4, 1947
Creator: Brimm, E. O., Dr. & Mohr, P.
Description: In the ether extraction process, as originally developed, purified uranium dioxide was obtained by evaporation and calcination of the uranyl nitrate solution, followed by calcination of the resultant UO{sub 3}. It was suggested that an alternate procedure might be developed, involving the precipitation of uranium from the nitrate solution as ammonium diuranate. This material could then be calcined to uranosic acid, or reduced directly to the dioxide. It had already been established that ammonium diuranate could be precipitated completely from uranyl nitrate solutions. Experiments were carried out to determine whether a basic nitrate, analogous to a known sulfate salt, would be formed in the process. Both direct reduction of the diuranate to UO{sub 2} and calcination to uranosic acid were investigated to determine the physical characteristics and residual nitrogen of the resultant brown oxide.
Contributing Partner: UNT Libraries Government Documents Department
The Preparation of Uranium

The Preparation of Uranium

Date: August 26, 1948
Creator: Rodden, Clement J.
Description: The method used for the preparation of uranium metal in a fused state was reduction of uranium chloride with calcium in a refractory-lined bomb. The reaction was started by externally heating the bomb with a gas flame. The metal was obtained in a solid chunk which was covered with a layer of fused calcium chloride. The metal obtained by this process had a density of 17.6 which on remelting in a vacuum induction furnace rose to 18.8. The melting temperature of the metal was estimated to be no greater than 1400 C. The metal was malleable, and had a silvery surface when freshly cut which rapidly tarnished, becoming black in the course of a few days.
Contributing Partner: UNT Libraries Government Documents Department
Production of Uranium Metal

Production of Uranium Metal

Date: February 17, 1943
Creator: Nagy, R.
Description: Experiments were carried out for the purpose of increasing production, efficiency, and purity of uranium metal. The electrolytic method as described by Driggs and Lilliendahl for the preparation of uranium metal was followed with but little deviation. The yield of metal at the very best was only 50%. The metal powder produced, at times, was very pyrophoric. Methods were found whereby the metal, at least in part, can be made from the oxides with an average yield of about 90%. The small amounts of sludge and slag accumulated in this modified process can readily be re-used in the electrolysis pot and, therefore, an overall yield of 96% can be obtained. Information accumulated from these experiments has been compiled in such a manner as to be readily available for factory use, for patent purposes and for future publication.
Contributing Partner: UNT Libraries Government Documents Department
The Production of Uranium Metal by Metal Hydrides Incorporated

The Production of Uranium Metal by Metal Hydrides Incorporated

Date: January 1, 1943
Creator: Alexander, P. P.
Description: Metal Hydrides Incorporated was a pioneer in the production of uranium metal on a commercial scale and supplied it to all the laboratories interested in the original research, before other methods for its production were developed. Metal Hydrides Inc. supplied the major part of the metal for the construction of the first experimental pile which, on December 2, 1942, demonstrated the feasibility of the self-sustaining chain reaction and the release of atomic energy.
Contributing Partner: UNT Libraries Government Documents Department
Master-Slave Manipulator

Master-Slave Manipulator

Date: March 7, 1949
Creator: Goertz, R.C.
Description: A device for manipulating a pair of tongs behind a shielding barrier has been built and tested. It is called a Master-Slave Manipulator because the slave tongs move in exact correspondence with a master handle. The "slave hands" follow the master hands in complete synchronism. This is the first completely master-slave manipulator known to exist and has proved that this type of manipulation is very successful when the unit is prooperly engineered and built.
Contributing Partner: UNT Libraries Government Documents Department
Cloud Chamber: Heat Shielding, Magnet Shielding

Cloud Chamber: Heat Shielding, Magnet Shielding

Date: 1946
Creator: Hering, D.
Description: Technical drawing of a cloud chamber and ionization chamber for use in nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
Cloud Chamber: Camera Lights Assembly

Cloud Chamber: Camera Lights Assembly

Date: 1946
Creator: Hering, D.
Description: Technical drawing of cloud chamber and ionization chamber for use in a nuclear reactor.
Contributing Partner: UNT Libraries Government Documents Department
Model 411 Scaler

Model 411 Scaler

Date: 1947
Creator: Sewell, C.
Description: Technical drawing of counters and circuits for use in nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
Wilson 4" Pump Valve

Wilson 4" Pump Valve

Date: 1947
Creator: U.S. Atomic Energy Commission
Description: Declassified Manhattan Project technical drawings of pumping machinery in nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
[Technical Drawings: Spiral Carrier]

[Technical Drawings: Spiral Carrier]

Date: 1947
Creator: U.S. Atomic Energy Commission
Description: Technical drawings of screw conveyors for use in nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
Lower Drive Assembly

Lower Drive Assembly

Date: 1947
Creator: U.S. Atomic Energy Commission
Description: Technical drawings for construction of the lower drive assembly for a nuclear reactor.
Contributing Partner: UNT Libraries Government Documents Department
[Technical Drawings: Building 706-D]

[Technical Drawings: Building 706-D]

Date: 1947
Creator: Monsanto Chemical Company
Description: Technical drawings of pipettes for use in nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
Alpha Chamber

Alpha Chamber

Date: 1947
Creator: United States. Office of Scientific Research and Development. Metallurgical Laboratory.
Description: Technical drawings detailing alpha rays in a nuclear reactor cloud chamber.
Contributing Partner: UNT Libraries Government Documents Department
Alpha Chamber Modified

Alpha Chamber Modified

Date: 1947
Creator: United States. Office of Scientific Research and Development. Metallurgical Laboratory.
Description: Technical drawings for alpha rays in a nuclear reactor cloud chamber.
Contributing Partner: UNT Libraries Government Documents Department
East Area Bldg #906: DuPont Carbon Unit

East Area Bldg #906: DuPont Carbon Unit

Date: 1944
Creator: E. I. du Pont de Nemours & Company
Description: Technical drawings of nuclear reactor design.
Contributing Partner: UNT Libraries Government Documents Department
Neutron Spectrometer

Neutron Spectrometer

Date: 1945
Creator: McDaniel, B. D.
Description: Technical drawings of spectrometer to measure neutrons in a nuclear reactor.
Contributing Partner: UNT Libraries Government Documents Department
Model 300 Sweep

Model 300 Sweep

Date: 1945
Creator: Elmore, W. C.
Description: Technical drawing of signal generators for use in nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
8 Inch Vacuum Pump

8 Inch Vacuum Pump

Date: 1947
Creator: U.S. Atomic Energy Commission
Description: Technical drawings of vacuum pumps and machinery for use in nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
Bridge 4" Oil Diffusion Pump

Bridge 4" Oil Diffusion Pump

Date: 1947
Creator: U.S. Atomic Energy Commission
Description: Set of technical drawings on the design and construction of vacuum pumps, pumping machinery, and nuclear reactors.
Contributing Partner: UNT Libraries Government Documents Department
Model Study of Wave and Surge Action, Naval Operating Base, Terminal Island, San Pedro, California

Model Study of Wave and Surge Action, Naval Operating Base, Terminal Island, San Pedro, California

Date: September 1947
Creator: Waterways Experiment Station (U.S.)
Description: The study reported herein was conducted in 1944 at the Waterways Experiment Station for the Bureau of Yards and Docks, U. S. Navy Department. Its purpose was to determine the best of several plans proposed for protecting the piers and dry docks at the Naval Operating Base, Terminal Island, San Pedro, California, from the effects of wave and surge action.
Contributing Partner: UNT Libraries Government Documents Department
Investigation of the Design and Control of Asphalt Paving Mixtures: Volume 3

Investigation of the Design and Control of Asphalt Paving Mixtures: Volume 3

Date: May 1948
Creator: Waterways Experiment Station (U.S.)
Description: "This appendix presents a description of the loading equipment, the tracking procedure, and the results of tests and observations made during and after the traffic tests on the asphalt stability test section. Analyses of the test results are also included" (p. 1).
Contributing Partner: UNT Libraries Government Documents Department
Investigation of the Design and Control of Asphalt Paving Mixtures: Volume 1

Investigation of the Design and Control of Asphalt Paving Mixtures: Volume 1

Date: May 1948
Creator: Waterways Experiment Station (U.S.)
Description: "This report presents the results of laboratory and field tests conducted by the Corps of Engineers to develop a method for the design and construction control of asphalt paving mixtures. The investigation consisted of: (a) the selection of a test apparatus and the performance of laboratory studies to develop techniques and procedures; (b) the construction of a test section and the performance of traffic tests with 15,000 and 37,000-lb single and 60,000-lb dual wheel loads to obtain design criteria; and (c) additional laboratory work to adjust the test procedures to the design criteria" (p. 1).
Contributing Partner: UNT Libraries Government Documents Department
Map of Standard Time Zones of the United States and Adjacent Parts of Canada and Mexico as of January 1, 1948

Map of Standard Time Zones of the United States and Adjacent Parts of Canada and Mexico as of January 1, 1948

Date: January 1, 1948
Creator: Geological Survey (U.S.)
Description: Map of the United States and surrounding areas with time zones marked and labeled in red. Bodies of water are marked, with depth marked by hatchures, as well as state lines and major cities..
Contributing Partner: UNT Libraries Government Documents Department
Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Date: December 30, 1949
Creator: Levin, Ernest M.
Description: Report with two nomograms presented for rapidly obtaining the compound composition of hydrated limes from the oxide analysis. The general nomogram can be applied to any commercial hydrated lime and gives values accurate to within 0.3 percent while the special nomogram is applicable only to regularly hydrated and highly hydrated dolomitic limes and is accurate to within 0.1 percent.
Contributing Partner: UNT Libraries Government Documents Department