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Determination of Thorium in Zircon

Description: From abstract: "A method is presented for the separation and spectrophotometric determination of thorium in zircon and other associated minerals... The steps necessary for the separation of interfering ions are discussed, and a study of the effect of various cations and anions is presented."
Date: April 1955
Creator: Cuttitta, Frank
Partner: UNT Libraries Government Documents Department

Electroplates on Thorium

Description: Abstract: "The protection of thorium in hot water was studied. Copper electrocladding on thorium offers promising protection against hot water. The corrosion of thorium in 95 C water was reduced appreciably by a thorium phosphate film. The results of this abbreviated investigation offer a basis for the development of a method of protecting thorium at elevated temperatures in corrosive media."
Date: January 9, 1953
Creator: Beach, John G.; Schickner, W. C.; Vaaler, L. E. & Faust, Charles L.
Partner: UNT Libraries Government Documents Department

Determination of Thorium in the Parts Per Million Range in Rocks

Description: 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."
Date: July 1957
Creator: Levine, Harry & Grimaldi, Frank S.
Partner: UNT Libraries Government Documents Department

Large-Scale Slurry-Circulation System, 300-SM

Description: Design philosophy, status of component development, operational procedures, and limitations of each section of the Oak Ridge large-scale, high-temperature, thoria slurry facility.
Date: December 21, 1961
Creator: Parsly, L. F., Jr.; Falkenberry, H. L.; Harley, P. H.; Miller, I. M. & Kenyon, V. L.
Partner: UNT Libraries Government Documents Department

New Description of Thorium Spectra

Description: Report discussing wavelengths and estimated intensities in electrodeless lamp and spark sources presented for 15121 lines of ThI, ThII, ThIII, and ThIV in the spectral range from 2000 to 11550 A. Also contains tables of previously published interferometric values.
Date: June 21, 1960
Creator: Zalubas, Romuald
Partner: UNT Libraries Government Documents Department

Domestic Resource of Uranium and Thorium : A Summary Based Upon Investigations by the u.s. Geological Survey

Description: From abstract: "This report summarizes our knowledge of the geology of radioactive raw materials and outlines the work done by the Geological Survey as well as that planned or recommended. An evaluation of uranium and thorium deposits is given in terms of known reserves and potential resources."
Date: April 1951
Creator: McKelvey, V. E.; Page, L. R.; Fischer, R. P. & Butler, A. P., Jr.
Partner: UNT Libraries Government Documents Department

Reconnaissance for Uranium and Thorium in Alaska, 1954

Description: The following report covers a reconnaissance for uranium and thorium in Alaska during the 1954 field season that consisted principally of a study of the radioactive beach placers east and west of Cape Yakataga, and ground and airborne radiometric traverses of portions of Kodiak Island and adjacent islands.
Date: October 1957
Creator: Matzko, John J. & Bates, Robert G.
Partner: UNT Libraries Government Documents Department

Some Studies of the Products of the High-Energy Fission Process

Description: Abstract: "The energy-dependence of the formation cross section of certain nuclides formed in fission of uranium and thorium has been studied. Excitation functions in the hundred-Mev region are given for Ni66, Zr97, Ag111, Ba131, and Ba139. Protons, deuterons, and alpha particles from the Berkeley 184-inch frequency modulated synchro-cyclotron were used to induce the activities."
Date: December 23, 1952
Creator: Lindner, H. & Osborne, R. N.
Partner: UNT Libraries Government Documents Department

Evaluation and Consolidation of Electrolytic Thorium

Description: Abstract: "Sound, fabricable ingots of thorium were produced by triple are melting of electrolytic thorium. Consumable electrodes were fabricated by tack welding of cold-pressed and vacuum-sintered bars of the granular thorium electrodeposited from a molten-salt bath. The hydrogen content of the electrodeposited material was reduced from 80 to 4 ppm by vacuum sintering at 1250 C at pressures below 1 x 10-(-3) mm of mercury. Both sodium and chlorine content were reduced during melting; sodium from 250 to 25 ppm and chlorine from 1000 to 30 ppm. Oxygen and HCl acid-insoluble contents increased during sintering and melting. Oxygen content increased from 0.35 to 0.50 w/o and HCl acid-insoluble content from 0.8 to 4.0 w/o. A starlike includion revealed by metallographic examination of the as-cast thorium was identified as ThO2."
Date: June 15, 1955
Creator: Saller, Henry A.; Dickerson, Ronald F. & Foster, Ellis L.
Partner: UNT Libraries Government Documents Department

Final Report on Purification of Thorium Nitrate by Solvent Extraction With Tributyl Phosphate: 1. Laboratory Investigations

Description: Report discussing laboratory investigations of thorium nitrate purification. Batch equilibrium data, solubility data, viscosity data, density data, and the results seven batch countercurrent extraction tests and two selective stripping tests are included.
Date: July 31, 1952
Creator: Ewing, R. A.; Fishel, J. B.; Kiehl, S. J., Jr.; Sharpe, R. E. & Bearse, A. E.
Partner: UNT Libraries Government Documents Department

Progress in Radioactive Iron Oxides Investigations

Description: Report discussing a study on secondary radioactive iron minerals closely associated with uranium and thorium deposits in various western states. From abstract: "A study on these radioactive 'limonites' was therefore undertaken in an attempt to find out in what form the radioactive material is present in the limonite, how it was introduced, and whether a field study of leached ferruginous cappings over uranium and thorium deposits might yield information about the depth, distribution, size, and grade of underlying ore bodies."
Date: June 1954
Creator: Lovering, Tom G.
Partner: UNT Libraries Government Documents Department

Bibliography and Index of Literature on Uranium and Thorium and Radioactive Occurrences in the United States Part 5: Northeastern Section

Description: A bibliography which consists of references to published literature, press releases, speeches, and both open-file and other unclassified reports dealing with uranium, thorium, and radioactive occurrences in several United States states.
Date: October 1956
Creator: Cooper, Margaret
Partner: UNT Libraries Government Documents Department

A Fluorimetric Study of the Thorium-Morin System

Description: A report about the irradiated ultraviolet light emitted when thorium reacts with morin. The effect on the fluorescence of such variables as concentration of acid, alcohol, thorium, morin, and complex; time, temperature, and wavelength of exciting light are studied to determine experimental conditions yielding maximum fluorescence.
Date: April 1956
Creator: Milkey, Robert G. & Fletcher, Mary H.
Partner: UNT Libraries Government Documents Department

Thorium-carbon alloys

Description: A report about a study of the methods of melting and fabricating the dilute alloys of carbon in thorium. The results of the study are reported here.
Date: 1953
Creator: Goldhoff, R. M.; Ogden, Horace R. & Jaffee, Robert Isaac, 1917-
Partner: UNT Libraries Government Documents Department

The Determination of Small Amounts of Thorium in Some Uranium Materials

Description: Abstract: "A method for the determination of small quantities of thorium in the presence of large quantities of uranium is presented. Solid samples are dissolved in an appropriate acid. Reducible metals are removed by means of a mercury cathode. Excess acid is removed by fuming to dryness. The residue is dissolved in water and made alkaline with saturated ammonium carbonate solution, thus complexing the uranium and permitting the precipitation of thorium hydroxide with the aid of an aluminum hydroxide carrier. Thorium is determined colorimetrically with thoron."
Date: 1946
Creator: Christopherson, E. W.; Woodard, R. W. & Larson, C. E.
Partner: UNT Libraries Government Documents Department

The Determination of Tuballoy in the Presence of Thorium in Peroxide Effluents and Cakes

Description: Abstract: "A polarographic method for the determination of tuballoy in thorium peroxide cakes in all sold medium was found to give satisfactory results. Fluorescent analyses on effluents containing thorium gave good results if the thorium content was kept below 1 mg/liter."
Date: February 1, 1946
Creator: Lasko, Wiliam. R. & Susano, C. D.
Partner: UNT Libraries Government Documents Department

Reconnaissance for Radioactive Deposits in the Vicinities of Ketchikan, Goddard Hot Springs, Chichagof, Funter Bay, and Juneau, Southeastern Alaska, 1949

Description: 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.
Date: April 1954
Creator: West, Walter S. & Benson, Paul D.
Partner: UNT Libraries Government Documents Department

A Fluorimetric Study of the Thorium-Morin System

Description: The following report evaluates the fluorescent system of the reaction between morin and thorium in weakly acid solutions in order to form a stable yellow complex which fluoresces yellow-green when its solutions are irradiated with ultraviolet light. The system is evaluated as a basis for the quantitative determination of trace amounts of thorium, and some of the theoretical and mathematical relationships between fluorescence and light absorption are also included.
Date: April 1956
Creator: Milkey, Robert G. & Fletcher, Mary H.
Partner: UNT Libraries Government Documents Department