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  • NIOSH
    RI 6400 Stress Determinations by Flat jack and Borehole-Deformation Methods

    By Robert H. Merrill, James V. Williamson, David M. Ropchan, George H. Kruse

    In- situ rock stresses were determined by flatjack and borehole - deformation methods . Estimates of the stress distribution around a flatjack were obtained by a combination of flatjack and borehole -

    Jan 1, 1964

  • NIOSH
    RI 6218 Mount Gran Coal Deposits, Victoria Land, Antarctica

    By John J. Mulligan

    The Bureau of Mines investigated coal deposits at Mount Gran (latitude 76°59' S, longitude 161°07' E), Victoria Land, Antarctica, during the austral summer of 1959-60 as part of the continui

    Jan 1, 1963

  • NIOSH
    RI 5054 Lessons From Intensive Dust Sampling Of A Coal Mine ? Introduction

    By Irving Hartmann

    The Bureau of Minas has been charged by the Congress with the responsibility for administrating the provisions of the Federal Coal-Mine Safety Act. One of the important duties of bureau inspectors und

    Jan 1, 1954

  • NIOSH
    RI 3410 Porosity Of The Sundance Sand In The Lance Creek Oil Field, Wyoming ? Introduction

    By H. Dale Nichols

    [The growing importance of the Sundence (Jurassic) formation an a source of oil, in the Rocky Mountain area has prompted the making of a series of porosity determinations of core samples collected. fr

    Jan 1, 1938

  • NIOSH
    IC 6134 Safeguarding Electrical Equipment Used In Gassy Mines European Practice: I - Great Britain ? Introduction

    By L. C. IlsLey

    Cooperation between the United States Bureau of Mines and the Safety in Mines Research Board of Great Britain, continuous since 1924, has made possible this and other papers on safety subjects. Gratef

    Jan 1, 1929

  • NIOSH
    RI 4650 Investigation Of The Rose Run Iron Area Bath County, Ky.

    By Neal M. Muir

    The increasing demand for iron ores prompted the Bureau of Mines to investigate the sources of past production in Kentucky to determine whether reserves of usable ore still exist. Preliminary investig

    Jan 1, 1950

  • NIOSH
    RI 8866 - A Basic Chloride Method for Extracting Aluminum From Clay

    By P. R. Bremmer

    As part of a program to devise alternative technologies for producing alumina from domestic resources, the Bureau of Mines investigated the leaching of calcined kaolinitic clay to form basic aluminum

    Jan 1, 1984

  • NIOSH
    RI 5100 Improved Tungsten Carbide-Cobalt Compacts By Electric-Resistance Sintering - Introduction

    By Perry G. Cotter

    As a portion of a general program for the synthesis of hard materials, a method was sought by which the hardness and density of tungsten carbide (WC)-cobalt compacts could be increased. It was demonst

    Jan 1, 1955

  • NIOSH
    RI 5771 Laboratory Concentration Of Seven Titanium-Bearing Ores Of The Pacific Northwest ? Introduction And Summary

    By J. W. Town

    As part of the Federal Bureau of Mines titanium resources examination program, samples from seven deposits in the Pacific Northwest were tested for amenability to various beneficiation techniques. The

    Jan 1, 1961

  • NIOSH
    RI 3662 Lamallar Grading of Powdered Mica

    By Oliver C. Ralston, Foster Fraas

    "INTRODUCTION The predominant characteristic of powdered mica is the thin -plate shape of the particulars, and the thinner the plates, the more enhanced is this characteristic. Consequently, it is fre

    Sep 1, 1942

  • NIOSH
    RI 5634 Vapor Pressures of Liquid Manganese and Liquid Silver

    By P. L. Woolf, J. P. Morris, E. Foerster, G. R. Zellars

    Measurements of vapor pressure can be used to determine the thermodynamic activities of the components of metallic solutions . The determination of activity by this method requires accurate values for

    Jul 1, 1960

  • NIOSH
    RI 9601 - Ion Elutriation Of Silver And Free Cyanide From Wastewater

    By F. H. Nehl

    Ion elutriation was used to extract silver cyanide complexes and free cyanide from aqueous streams containing up to 10 ppm silver and 5 ppm free cyanide. Screening tests selected nine of 350 different

    Jan 1, 2010

  • NIOSH
    RI 6007 Carbon Formation In Very Rich Hydrocarbon-Air Flames ? Introduction And Summary

    By Joseph M. Singer

    This research project had two main objectives: (1) To identify the smoke limits of gaseous fuel-air mixtures and (2) to obtain and evaluate basic chemical information on the formation of smoke in very

    Jan 1, 1962

  • NIOSH
    IC 6100 Electrical Accident Prevention

    By L. C. IlsLey

    The first thing to consider in prevention of electric shock is the voltage of the circuit. No person can be sure that he will not be killed, even from a 110-volt circuit, if he makes proper contact wi

    Feb 1, 1929

  • NIOSH
    RI 2447 Gasoline Saved on Government Trucks by Adjusting Carburetors by Exhaust-Gas Analysis

    By W. A. Dunkley

    During the past year and a half the Western United Corporation of Aurora , Illinois , has been distributing carburetted water ges from its Lockport , Ill . , plant , to an extensive territory , under

    Feb 1, 1923

  • NIOSH
    RI 8001 Engineering Properties of Fiber-Reinforced and Polymer-Impregnated Shotcrete

    By M. E. Poad

    Structural properties of steel-fiber-reinforced shotcrete and polymer-impregnated shotcrete, both plain and fiber-reinforced, were investigated by the Federal Bureau of Mines, Spokane Mining Research

    Jan 1, 1975

  • NIOSH
    RI 2984 A Diaphragm Or "Breather" Roof For Oil-Storage Tanks ? Introduction

    By Ludwig Schmidt

    The economic value of reducing the evaporation losses of crude oil and of gasoline is so well founded that the petroleum industry is constantly seeking new and improved storage tanks and methods of ha

    Jan 1, 1930

  • NIOSH
    RI 8087 Studies of Sand-Sulfur-Asphalt Paving Materials

    By T. A. Sullivan

    The use of sulfur combined with either sand or waste copper tailings was investigated by the Bureau of Mines as a substitute for a good graded aggregate in asphalt paving materials. The research was p

    Jan 1, 1975

  • NIOSH
  • NIOSH
    RI 5561 Geologic Factors Related To Block Caving At San Manuel Copper Mine, Pinal County, Ariz. - 2. Progress Report, April 1956 - March 1958 ? Summary And Conclusions

    By E. D. Wilson

    This is the second of a series of progress reports describing work undertaken at the San Manuel copper mine to study the geologic factors influencing block caving of the deposit. The first report desc

    Jan 1, 1960