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Estimate of Known Recoverable Reserves of Coking Coal in Cambria County, Pennsylvania

Description: Report issued by the U.S. Bureau of Mines on estimates of known deposits of coking coal in Cambria County, Pennsylvania. Studies on the properties of coal and coal blends from the area are presented. The report includes maps and tables.
Date: October 1950
Creator: Dowd, James J.; Turnbull, Louis A.; Toenges, Albert L.; Cooper, H. M.; Abernethy, R. F.; Reynolds, D. A. et al.
Partner: UNT Libraries Government Documents Department
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Some Innovations in Equipment For Scaling High Roofs and Mine Walls

Description: Report issued by the U.S. Bureau of Mines describing the methods and equipment developed at the oil-shale mine near Rifle, Colorado. This report includes photographs and illustrations documenting this equipment.
Date: October 1950
Creator: Brown, Brinton C.; Wright, Fred D. & Ballinger, Homer J.
Partner: UNT Libraries Government Documents Department
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Zirconium Research and Development : Progress Report

Description: From introduction: "This is the ninth monthly report, BMI-514, under Contract No. AT(30-1)-771 on "Zirconium Research and Development". The report covers the work period from September 15, 1950, to October 15, 1950. Work is continuing on the preparation of large-diameter zirconium crystal bars in the 16-inch-diameter de Boer unit. Crystal bars up to 1-5/16 inches in diameter and 8 feet long have been prepared in this unit."
Date: October 15, 1950
Creator: Bulkowski, H. H.; Sebenick, J. J.; Campbell, Ivor E. & Gonser, B. W.
Partner: UNT Libraries Government Documents Department
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Pitchblende Deposits at the Wood and Calhoun Mines, Central City Mining District, Gilpin County, Colorado

Description: From introduction: The purpose of this work was to determine the distribution and reserves of pitchblende in the veins. These particular mines were selected because the other mines that had produced pitchblende in the east were either inaccessible, or accessible under such adverse conditions as to make detailed mapping impracticable.
Date: October 1950
Creator: Moore, Frank B. & Butler, C. R.
Partner: UNT Libraries Government Documents Department
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Electrodeposition of Aluminum and Zirconium on Uranium

Description: Technical report outlining a method for the electrodeposition of adherent deposits of both aluminum and zirconium on uranium. Report finds that current efficiencies are good for aluminum deposition but low for the zirconium baths. [From Abstract]
Date: October 12, 1950
Creator: Lietzke, M. H.
Partner: UNT Libraries Government Documents Department
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Hanford Works Monthly Report: September 1950

Description: This is a progress report of the production reactors on the Hanford Reservation for the month of September 1950. This report takes each division (e.g., manufacturing, medical, accounting, occupational safety, security, reactor operations, etc.) of the site and summarizes its accomplishments and employee relations for that month.
Date: October 20, 1950
Creator: Prout, G. R.
Partner: UNT Libraries Government Documents Department
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P-10 research program in biology

Description: Early this year recommendations for biological research with tritium were outlined by M. E. Getzendaner in document EW-17059. Since then work on many of the preliminary experiments suggested in that document has been and further thought has been given to design a research program to secure the information needed for evaluation of the tritium hazards. It seems desirable at this time to reformulate the projected research more extensively. This document will indicate only the scope of desirable in… more
Date: October 23, 1950
Creator: Thompson, R. C.
Partner: UNT Libraries Government Documents Department
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The Preparation and Properties of Mammalian Ribonucleic Acids

Description: "A method for the preparation of mammalian ribonucleic acids employing high concentrations of guanidine hydrochloride in the fractionation procedure is reported in this paper. Aside from the facility of preparation the method has the advantage of avoiding conditions of acidity and alkalinity which might degrade tissue ribonucleic acids and, by virtue of the protein denaturant action of guanidine salts, of minimizing the possibility for enzymatic degradation" (p. 3).
Date: October 12, 1950
Creator: Volkin, E. & Carter, C. E.
Partner: UNT Libraries Government Documents Department
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Nuclear Quadrupole Moments and Nuclear Shell Structure

Description: Describes a simple model, based on nuclear shell considerations, which leads to the proper behavior of known nuclear quadrupole moments, although predictions of the magnitudes of some quadrupole moments are seriously in error.
Date: October 31, 1950
Creator: Townes, C.H.; Foley, H.M. & Low, W.
Partner: UNT Libraries Government Documents Department
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The Effect of Electronic Paramagnetism on Nuclear Magnetic Resonance Frequencies in Metals

Description: Observations on the shifts of nuclear resonances in metals (Id {sup 7}, Na {sup 23}, Ou {sup 63}, Be {sup 9}, Fe {sup 207}, A1 {sup 27} and Oa {sup 69}) due to free electron paramagnetism; comparison with theoretical values.
Date: October 31, 1950
Creator: Townes, C. H.; Herring, C. & Knight, W. D.
Partner: UNT Libraries Government Documents Department
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Hyperfine Structure and Exchange Narrowing of Paramagnetic Resonance

Description: Discussion of electronic paramagnetic resonance for the free radical a, a-diphenyl β-picryl hydrazyl as observed by its effect on the transmission of microwaves through a TE {sub 01} cavity with a small amount of the free radical placed approximately on the axis of the cavity; the half-width of this resonance at half maximum absorption was 1.45 oersteds.
Date: October 31, 1950
Creator: Townes, C.H. & Turkevich, J.
Partner: UNT Libraries Government Documents Department
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ZIRCONIUM RESEARCH AND DEVELOPMENT. Progress Report No. 9 for September 15, 1950 to October 15, 1950

Description: A zirconium crystal bar, weighing 29 pounds and 1 5/16 inches in diameter by 8 feet in over-all length, was prepared, using pear-shaped zirconium couples to join the filament to the electrodes. This crystal bar was the largest produced to date in the 16-in.-diam. de Boer unit. The design of the couplings was modified to incorporate improvements indicated by the initial run, and another run is in progress. Binary alloys of Zr and Ni, Cr, and Si, as well as a zirconium alloy containing Fe, Al, an… more
Date: October 15, 1950
Creator: Bulkowski, H.H.; Sebenick, J.J.; Campbell, I.E. & Gonser, B.W.
Partner: UNT Libraries Government Documents Department
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Comparison of Diluents for Tributyl Phosphate

Description: This report summarizes a study of the composition and physical properties of a number of hydrocarbon diluents together with some generalizations regarding relations between these properties.
Date: October 1, 1950
Creator: Burger, L. L.
Partner: UNT Libraries Government Documents Department
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Pressure Distribution and Damping in Steady Pitch at Supersonic Mach Numbers of Flat Swept-Back Wings Having All Edges Subsonic

Description: Note presenting a method for calculating the pressure distribution and damping in steady pitch at supersonic Mach numbers of thin, flat, sweptback wings with all edges straight and subsonic. The two steps of the method are described and applied to wings with streamwise tips. The analysis showed that abrupt changes in pressure should occur along the various primary and reflected Mach lines on the wing, especially those originating at the tips of the leading edge.
Date: October 1950
Creator: Walker, Harold J. & Ballantyne, Mary B.
Partner: UNT Libraries Government Documents Department
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Sintering mechanism between zirconium carbide and columbium

Description: Report presenting an investigation of the sintering process and sintering mechanism of a zirconium carbide-columbium ceramal. Results regarding the study of the bonding specimen and study of the sintering specimens are provided.
Date: October 1950
Creator: Hamjian, H. J. & Lidman, William G.
Partner: UNT Libraries Government Documents Department
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Wind-Tunnel Investigation at Low Speed of the Lateral Control Characteristics of an Unswept Untapered Semi-Span Wing of Aspect Ratio 3.13 Equipped With Various 25-Percent-Chord Plain Ailerons

Description: Report presenting a wind-tunnel investigation at low speed to determine the lateral control characteristics of an unswept untapered semispan wing of aspect ratio 3.13 equipped with 25-percent-chord plain unsealed ailerons with various spans and spanwise locations. Results regarding wing aerodynamic characteristics and aileron control characteristics are provided.
Date: October 1950
Creator: Johnson, Harold S. & Hagerman, John R.
Partner: UNT Libraries Government Documents Department
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