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Tests of mechanical and physical properties and cryogenic wear were performed to qualify a replacement material for the glass-reinforced Teflon used in the NERVA turbopump bearing retainer.

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This paper discusses the provisions of the Constitution and laws of the United States which might be considered by the court in reaching a decision on the eligibility for the presidency of a person born abroad of an American parent or parents.

This report includes information on Byelorussia's National Revival, the movement for Byelorussian independence in World War 1, the German occupation of Byelorussia, Russia's March Revolution of 1917, after the Bolshevik Revolution of November 1917, and the Declaration of Byelorussian Independence in March of 1918.

This report contains a list of public works pertaining to internal migration with a special emphasis on rural to urban migration.

In-tank solidification (ITS) of large quantities of goal of aged, alkaline radioactive waste solutions is an integral part of the overall Hanford Waste Management program. Thus, the first ITS unit is currently operational in the 102 BY tank and a second ITS unit recently became operational in the 112 BY tank. The 112 BY tank contains neutralized Metal Recovery Plant waste of the estimated gross salt composition 3.4M NaNO{sub 3}{minus}0.04M NaCl-0.31M NaCH. Tank samples and photographs of the tank interior confirm that a layer of organic material covers at least part of the aqueous waste. The exact volume of the organic material is not known but is presumed small. However, because of possible and unknown hazards, this organic material complicates ITS operations. The experiments summarized in this report were performed to determine the composition and some of the properties and reactions of the organic material to define such hazard.

Analysis of Columbia River temperature trends indicates conformity with those previously reported. Despite unusually high average temperatures, the temperatures of the upper and lower extremes continued to converge on the mean. The construction of the John Day Dam is expected to have little temperature effect other than a delay of ten days in the timing of the annual temperature peak. Measurements of radioactivity in 465 children were completed at the third Pasco elementary school on January 12. Whole-body counting at the fourth school began on January 24, following lectures to the staff and 17 classrooms. The whole-body counter was recalibrated for K{sup 40} and Zn{sup 65} in late January. Only small modifications in the calibration factors over those currently employed are expected. Washington State Game Department personnel have supplied sufficient pheasant and quail samples shot near the Columbia River for comparison of radionuclide content between species and collection of these samples has been discontinued. The Department of Game continues to supply ``road-kills`` for radiochemical analysis in exchange for x-ray data on the number of birds which contain shot. A game-bird questionnaire for mailing to a statistical sample of Tri-City hunting license holders was drafted in January.

Process tube and fuel jacket failures due to corrosion are recurring problems in the operation of nuclear reactors and are generally accentuated by coolant temperature increases. Water mixer fuel pieces which mix the subchannel flow streams are used in the production reactor fuel columns to reduce peripheral and hole-to-annulus coolant temperature disparities and, thus, to reduce corrosion problems. The mixer in current use is approximately two inches long and is attached to a six inch fuel piece. This fuel element with attached mixer is generally placed as the seventh fuel element from the downstream end of the charge. A new miser design has been proposed and is shown. Its basic operation is similar to that of the present design (H-3-17493) in that it exchanges the flow stream in the central hole with fluid in the annulus. The standard mixer utilizes circular interchannels to perform the fluid interchange, whereas, the new mixer uses larger channels of rectangular cross-section. The purpose of this study was to evaluate the mixing effectiveness and pressure loss characteristic of this new mixer and to compare it with the performance of the standard mixer.

This report presents an equation used for calculating the radii of non-spherical cavities formed by underground nuclear explosions.

Abstract: "A continuous countercurrent solvent extraction process utilizing dibutyl carbitol as the extractant has been developed for separating 210Po from large amounts of associated bismuth. Both laboratory and pilot plant data demonstrate the process is a suitable headend step in recovery of kilogram quantities of 210Po. Typically, the extraction process recovers over 98% of the 210Po, essentially free from bismuth (Bi DF>1500), in a dilute HNO3 solution suitable as a starting material for final concentration and purification steps."

This report follows a study that was made to develop comparative fuel cycle costs for nitride and carbide fuels in a 1000 MWe sodium-cooled fast-breeder reactor.

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Newsletter of the University of Texas Bureau of Business Research outlining statistics and research related to business in Texas.

Several methods of determining meteorite ages depend ages upon nuclides formed by cosmic ray interactions. The tactic assumption is always made that the intensity of cosmic radiation does not vary in time or space. However it is known that the intensity of cosmic radiation at the earth varies with the solar activity. The spectrum of cosmic ray protons and alpha particles exhibit a marked drop at the low energy end (<1.5 GeV) and the intensity in the region appears to follow the 11 year cycle of solar activity. The low energy cosmic rays increase in intensity with a decrease in solar activity. These changes in cosmic ray intensities are generally attributed to a modulation of the galactic cosmic radiation by the magnetic fields associated with the outward streaming solar material, the solar wind. One would therefore expect that the cosmic ray intensity several astronomical units from the sun is greater than the intensity at the earth's orbit, particularly at the low energy end of the spectrums.

The mode of dissolution of magnesium in molten magnesium chloride contacted with Mg-Pb alloys was studied at 750°C using anodic chronopotentiometry. An inert tantalum anode was used to determine relative amounts of magnesium dissolved in its chloride as a function of magnesium activity in the alloy. According to the law of mass action a linear dependence of magnesium solubility on a Mg indicates Mg2Cl2 as the reaction product and a parabolic dependence indicates MgCl. It was found that the amount of magnesium dissolved in its chloride was directly proportional to the magnesium activity in the metal phase, i.e., a linear dependence, indicating Mg2Cl2 as the subhalide species. Due to the corrosive nature of the Mg-MgCl2 system a special apparatus was used so that only the inert metals tantalum and molybdenum came in contact with the melt. Purification procedures and conditions for proper equilibration and measurement were established and are reported. The basic equation of chronopotentiometry, [equation not transcribed], was found to hold and at given magnesium activities the product [unintelligible] did not vary with the current, indicating the validity of the analytical technique.

Monthly newsletter of the High Plains Underground Water Conservation District No. 1, discussing the field of underground water. Topics include profiles of water conservation research, annual pre-plant soil moisture survey data, annual Winter Water Level measurement data, and information about the latest water conservation tips.

Magazine discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.