None

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.

None

None

None

This report presents details of the activities of Douglas United Nuclear at the Hanford site during the month of January 1968.

None

This report is made up of materials relating to Public Welfare programs under Social Security Act.

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

None

This report presents the details of the status of special reactor process tube loadings for the month of February 1968.

Fuel element swelling problems have been experienced in the high-exposure fuel irradiation program in C Reactor, In an effort to determine the mechanism responsible for this swelling, three elements from C Reactor, one of which was a ruptures, were sent to the Radiometallurgy Laboratory for visual and metallographic examination. Because the swelled fuel was not numbered as to column position, the exact position of the examined elements is not known but they were believed to have come from the center of the charge and therefore exposures for these individual elements will be 25--50% higher than the column average exposures. This percentage figure was determined from data from nine tubes of C2N fuel which exhibited swelling. These nine tubes operated under nearly the same conditions as the examined elements. Maximum core temperatures for the examined elements are believed to be between 300--340C. The mechanisms for swelling were different in the high and low-exposure fuels. The high-exposure fuel exhibited grain-boundary tearing along a wide circumferential band over the entire transverse section of the fuel examined. The areas near the OD and ID were relatively free from tearing. The low-exposure fuel showed no grain boundary tearing but it did contain angular voids in …

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

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.

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.

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.

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.

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."

Report issued by the Bureau of Mines on investigations of air contamination in tunnels due to diesel exhaust. Air samples were taken inside tunnels and measured for carbon dioxide, carbon monoxide, and nitrogen oxides. This report includes tables and graphs.

Index of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.

Index of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.

None

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.