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  • NIOSH
    IC 6725 Explosives Accidents In California Metal Mines

    By S. H. Ash

    [On December 2, 1932, the Governor of California called upon the representatives of the mining industry of the State to attend a meeting at Sacramento to discuss ways and means of assisting is relievi

    Jan 1, 1933

  • NIOSH
    Part Seven - Theoretical Seismic Signal Source And Transmission Characteristics – I Summary

    By John T. Kuo

    The miner's seismic source strength can be approximately estimated on the basis of a single force acting in an infinite medium. Because of the uncertain- ty involved in estimating the amount of c

    Jan 1, 1974

  • NIOSH
    Part Ten - Signal-To-Noise Ratio Improvement Techniques – I. Summary

    By Roy Greenfield

    During the detection phase, several procedures can be used to improve the signal-to-noise ratio (SIN) . • Subarrays of up to 10 seismometers should be used. The apparent failure to obtain improveme

    Jan 1, 1974

  • NIOSH
    RI 6425 Experiments With a Self-Generated Carbon-Expanded Iron Catalyst for Synthesis of Methane

    By W. P. Haynes, A. J. Youngblood, J. J. Demeter

    Synthesis of high - Btu gas , using the Fischer - Tropsch reaction was investigated in a tube - wall reactor of 2 - inch steel . The catalyst was carbonexpanded iron ( CEI ) , formed on the walls of a

    Jan 1, 1964

  • NIOSH
    Reducing Respirable Dust Exposure of Workers using an Improved Clothes Cleaning Process

    By Andrew D. O. O’Brien, Linda J. McWilliams, Joe L. Howell, Douglas E. Pollock, Jeanne A. Zimmer, Andrew B. Cecala

    A quick, safe, and effective method has been developed that allows workers to clean their dust laden work clothing periodically throughout the day. For the mining industry, this technique is much more

  • NIOSH
    OFR-97(2)-80 Coal Mining Equipment Vibration Data Report - Volume II

    By Ervin P. Fuchs

    Volume II of this report presents the vibration data, octave band data, one-third octave band data and narrow band (amplitude versus frequency) data for ten mining machines. These ten mining machines

    Jan 1, 1979

  • NIOSH
    OFR-10-81 Development Of Dual Input/Dual Purpose Power Converter For Trolley Wire Operation

    By D. A. Paice

    A power supply to operate fluorescent or mercury vapor lamps from 300 volt dc coal mine trolley wires has been developed for the Bureau of Mines. A high frequency regulated inverter unit incorporates

    Jan 1, 1979

  • NIOSH
    RI 4402 Gaseous Reduction Methods For The Production Of Sponge Iron

    By Edward P. Barrett

    The production of sponge iron is one of the earliest arts in the metal¬lurgy of iron and steel. The idea of producing iron direct from ore at temperatures lower than the melting point of, the iron has

    Jan 1, 1949

  • NIOSH
    RI 4959 Analyses Of Crude Oils From Some West Texas Fields II. Additional Analyses ? Introduction

    By E. L. Garton

    Analyses of samples of crude oil from fields in West Texas have been published from time to time in Bureau of Mines reports.3/ Analyses of 100 samples of crude oil from West Texas) collected during 19

    Jan 1, 1953

  • NIOSH
    IC 8525 Petroleum And Oil-Shale Research Of The Bureau Of Mines, Fiscal Year 1969

    By Bill Linville

    During fiscal year 1969, the Bureau of Mines was engaged in 66 projects to improve methods for producing and utilizing petroleum. Programs directed toward the continued conservation of this natural re

    Jan 1, 1971

  • NIOSH
    RI 8151 Applying Computer-Drawn Maps of Geologic Data to Analysis of Mining Problems

    By Charles M. McCulloch

    This Bureau of Mines report discusses the principles of using computers to draw maps and plot geologic data of mining areas. The types of maps that can be drawn by a computer are reviewed, using as ex

    Jan 1, 1976

  • NIOSH
    OFR-95-83 Personal Dust Monitor - Light Scattering

    By Pedro Lilienfeld

    The objective of this program was the development, design, and fabrication of six personal-sized completely self-contained dust monitors capable of real-time as well as time-averaged monitoring of the

    Jan 1, 1982

  • NIOSH
    RI 9407 - Remote Fiber-Optic Methane Monitor (09a3ecfe-891f-4d7e-a59c-db2d4a7b547f)

    By T. H. Dubaniewicz

    Fiber-optic technology is progressing rapidly, including the development of fiber-optic sensors for many applications. These sensors have the advantages of high sensitivity, light weight, small size,

    Jan 1, 2010

  • NIOSH
    RI 4386 Investigation Of Royal Princess Zinc-Lead Deposit Jo Daviess County, Ill.

    By Stephen P. Holt

    In the fall of 1946 and spring of 1947 the Bureau of Mines put down five inclined diamond-drill holes totaling about 3,100 feet of bore to test for the possible eastward extension of the Royal Princes

    Jan 1, 1948

  • NIOSH
    RI 5911 Production Of Synthesis Gas And Hydrogen By The Steam-Iron Process: Pilot Plant Study Of Fluidized And Free-Falling Beds - Summary

    By S. J. Gasior

    Pilot plant studies showed the technical feasibility of fluidized-bed operation for producing hydrogen and synthesis gas by the steam-iron process. A mixture of iron and iron oxide from 20-to 100-mesh

    Jan 1, 1961

  • NIOSH
    RI 7601 Laboratory Flotation Studies Of Tennessee Phosphates In The Presence Of Slimes

    By W. E. Lamont

    Flotation studies of phosphate-bearing waste pond materials, low-grade washer products, and raw ores, all from the Tennessee brown phosphate district, showed that these types of materials could be tre

    Jan 1, 1972

  • NIOSH
    RI 7121 Effects Of Cobalt On Precipitation Hardening Of Am 350 Stainless Steel

    By M. M. Tilman

    A series of alloys was laboratory prepared by adding up to 4 weight-percent cobalt to the basic composition of type AM 350 (AISI 633) stainless steel. Aging curves were established for each alloy at 7

    Jan 1, 1968

  • NIOSH
    RI 7489 Gold Transport By Complex Metal Chloride Vapors

    By Judith A. Eisele

    The possibility of improving the volatilization of gold through the formation of a metal-gold chloride vapor complex was investigated. Gold-silica mixtures, containing ferrous and nonferrous minerals

    Jan 1, 1971

  • NIOSH
    RI 9407 - Remote Fiber-Optic Methane Monitor

    By T. H. Dubaniewicz, J. E. Chilton

    Fiber-optic technology is progressing rapidly, including the development of fiber-optic sensors for many applications. These sensors have the advantages of high sensitivity, light weight, small size,

    Jan 1, 1992

  • NIOSH
    RI 6507 Molten-Salt Electrorefining of Uranium

    By F. R. Cattoir, T. A. Sullivan

    Commercial uranium metal was electrore fined to a high- purity product using molten- salt electrolytes in an inert atmosphere cell . Electrorefined uranium that contained , after consolidation , less

    Jan 1, 1964