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  • NIOSH
    RI 5867 Factors Influencing The Incendivity Of Permissible Explosives: Ammonium Nitrate And Carbonaceous Material ? Introduction

    By N. E. Hanna

    An important goal in the development of coal mining explosives has been to improve their safety characteristics through suitable formulation. In the United States no systematic effort to establish fac

    Jan 1, 1961

  • NIOSH
    RI 9359 - A Mass Spectrometer Method for Determining Helium in the Parts-Per-Million to 10-Percent Range

    By Phillip W. Holland

    The U.S. Bureau of Mines has developed a mass spectrometer method for determining helium in the parts-per-million to 10% range to an accuracy of ± 1%. The method employs a mass spectrometer, an inlet

    Jan 1, 2010

  • NIOSH
    RI 9671 - Self-Contained Self-Rescuer Long Term Field Evaluation Combined Eighth And Ninth Phase Results

    The National Institute for Occupational Safety and Health (NIOSH) National Personal Protec-tive Technology Laboratory (NPPTL) and the Mine Safety and Health Administration (MSHA) conduct a Long Term F

    Jan 10, 2006

  • NIOSH
    Alnminosilicate Surface Contamination of Respirable Quartz Particles from Coal Mine Dusts and From Clay Works Dusts

    By R. L. Grayson, W. E. Wallace, M. D. Attfield, A. Q. Wearden, P. Bolsaitis, R. D. Kennedy, M. J. Keane, J. C. Harrison

    "Respirable high-silica particles from four coal mines. a clay mine and a tunnelling site were analysed for silicon vs aluminum composition by performing scanning electron microscopy-energy dispersive

    Dec 1, 1995

  • NIOSH
    Field Evaluation Of Mobile Roof Support Technologies

    By John Owens, Marc Endicott, Hamid Maleki

    This study presents a historic overview of the role of mobile roof support (MRS) technologies in improving stability and worker safety and presents the results of recent field evaluations of the MRS l

  • NIOSH
    RI 7648 Use Of Composite Diaphragms In The Electrowinning Of Titanium

    By O. Q. Leone

    Composite diaphragms were used in the investigation of electrowinning Ti from TiC14 in a fused LiCl-KCI-TiC'2 electrolyte. Composite diaphragms tested were of two general classes--those consistin

    Jan 1, 1972

  • NIOSH
    RI 9496 - Electrolytic Cleaning And Conditioning Of Gold Redox Probes In Flotation Circuits

    By William K. Tolley

    The U.S. Bureau of Mines (USBM) is currently investigating the electrochemistry of mineral flotation. A significant need in this area is greater reliability of sensors. The USBM is testing electrolyti

    Jan 1, 2010

  • NIOSH
    RI 4821 Raw Materials For The Mineral-Wool Industry

    By C. H. Gorski

    Evaluation of raw materials for mineral wool is one phase of the Bureau of Mines broad program for the more effective utilization: of our mineral resources. The experimental work and test-evaluation r

    Jan 1, 1951

  • NIOSH
    RI 8882 - Corrosion Rates of Grinding Media in Mill Water

    By W. K. Tolley

    This report presents data collected during research by the Bureau of Mines on corrosion of grinding media. Corrosion rates of eight alloys commonly used in grinding media were tested in synthetic mill

    Jan 1, 1984

  • NIOSH
    RI 9010 - An Improved Analyzer for Determining Helium-4 in Parts-Per-Billion Range

    By Charles Seitz

    The Bureau of Mines has modified its parts-per-billion helium-4 analyzer to improve the analytical capabilities of the instrument. The modifications resulted in the following improvements: (1) The ana

    Jan 1, 1986

  • NIOSH
    Ground Wire Monitors For Surface Coal M'ines

    By W. L. Cooley, K. Y. Lee, M. M. Hassan

    Because power system topographies for surface coal mines are significantly different from those for underground coal mines, the requirements for ground wire monitors for surface systems are somewhat d

    Jan 1, 1979

  • NIOSH
    RI 3411 Tests Of A Barrier Using Rock Dust In Paper Bags ? Origin Of Investigation

    By H. P. Greenwald

    About mid-December 1936, the safety director of a large coal corporation visited the authors at the Bureau's Experimental coal mine to discuss a rock-dust barrier he had invented primarily for us

    Jan 1, 1938

  • NIOSH
    RI 9487 - A Data Acquisition and Analysis System for Nondestructive Testing of Wire Rope

    By Todd M. Ruff

    Current methods of inspecting wire rope for broken wires or excessive wear include visual inspection, physical measurements of rope diameter, and electromagnetic nondestructive testing (NDT). Visual i

    Jan 1, 2010

  • NIOSH
    RI 9114 - Probability of Resistive Spark Ignition Caused by Very Low Currents

    By James C. Cawley

    The Bureau of Mines has empirically determined ignition probability versus current for resistive circuits in an 8.3% methane-air atmosphere. Simple ignition probability, defined as the number of ignit

    Jan 1, 1987

  • NIOSH
    IC 8219 Potential Of Nuclear Explosives For Producing Hydrocarbons From Deposits Of Oil, Natural Gas, Oil Shale, And Tar Sands In The United States

    By J. Wade Watkins

    One potential peaceful application of nuclear explosives is stimulating the production of liquid or gaseous hydrocarbons from essentially nonproductive deposits of petroleum, natural gas, oil shale, a

    Jan 1, 1964

  • NIOSH
    IC 9230 A Method For The Calibration Of Class 2 And Class 4 Standards Of Mass

    By Nabil A. Bibawy

    The U.S. Bureau of Mines has established a method for the calibration of class 2 and class 4 standards of mass using a procedure from designs developed by the National Institute of Standards and Techn

    Jan 1, 1989

  • NIOSH
    RI 3034 The Effectiveness Of Different Size Rock Dusts In Preventing Coal-Dust Explosions In Mines ? Foreword

    By G. S. Rice

    The recommendations of the Bureau of Mines on rock-dusting practices are embodied, except in a few details, in the Recommended American Practice for Rock-Dusting Coal Mines to Prevent Coal-Dust Explos

    Jan 1, 1930

  • NIOSH
    RI 9444 - Longwall Retreat of Gate Road Pillars (c7601020-d513-40cf-aea6-4d0a1eaae1e8)

    This report describes a U.S. Bureau of Mines investigation into the removal of gate road chain pillars in conjunction with longwall retreat mining. The research objective was to determine, through eva

    Jan 1, 2010

  • NIOSH
    IC 8219 Potential Of Nuclear Explosives For Producing Hydrocarbons From Deposits Of Oil, Natural Gas, Oil Shale, And Tar Sands In The United States (ac960082-1797-411e-80b5-b0cb478a1959)

    By J. Wade Watkins

    One potential peaceful application of nuclear explosives is stimulating the production of liquid or gaseous hydrocarbons from essentially nonproductive deposits of petroleum, natural gas, oil shale, a

    Jan 1, 1964

  • NIOSH
    RI 6738 Reduction-Volatilization Processes For Recovery Of Manganese From Ores

    By W. L. Falke

    Procedures in which manganese compounds are reduced and the metal is volatilized and selectively condensed, a hitherto neglected area, were investigated. More than 95 percent of the manganese was reco

    Jan 1, 1966