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  • NIOSH
    IC 8237 Bureau Of Mines Research And Technologic Work On Coal, 1963 ? Introduction

    Coal research and technologic work by the Bureau of Mines covers a broad program of investigation aimed at conservation and utilization of this important natural resource. Conservation is served by a

    Jan 1, 1964

  • NIOSH
    MLA 6-89 - Mineral Resources Of The Lower Owyhee Canyon Study Area, Malheur County, Oregon

    By J. Douglas Causey

    In 1986 and 1987, at the request of the Bureau of Land Management, the U.S. Bureau of Mines studied 73,010 acres of the 76,480-acre Lower Owyhee Canyon Wilderness Study Area (OR-003-110) in order to e

    Jan 1, 1989

  • NIOSH
    RI 3104 The Overheating of Rubber-Sheathed Trailing Cables (1727008d-c514-4d4a-8661-07773540899e)

    By A. B. Hooker, L. C. IlsLey

    "Field inspections and data relative to the use of rubber—sheathed trailing cables in mines show that much cable is ruined or its probable life shortened by being overheated in service.The length of c

    Jul 1, 1931

  • NIOSH
    IC 7252 Summary Of State Laws Pertaining To Explosives - Part 2. Districts A And C - Kentucky, Maryland, Pennsylvania, Virginia, West Virginia ? Foreword

    This summary of State laws or explosives was compiled primarily to ascertain what subjects relating to their control have been acted upon by each State legislature and, in general, how they have been

    Jan 1, 1943

  • NIOSH
    Significant Events In 1986 - National Economic Performance

    The U.S. economy continued to expand during 1986, although at the slowest pace since 1982 when the current business expansion began. Real gross national product (GNP) grew about 2.6%, slightly below 1

    Jan 1, 1986

  • NIOSH
    RI 8502 Amine Flotation of Chromite Ores From the Stillwater Complex, Mont.

    The Bureau of Mines, U.S. Department of the Interior, devised a flotation technique for upgrading chromite in chromium ores and gravity concentrates. The technique consisted of cationic flotation of c

    Jan 1, 1980

  • NIOSH
    RI 5117 The Fabrication Of Arc-Melted Ingots Of Titanium And Titanium-Manganese Alloys Into Plate ? Summary

    By R. W. Huber

    Three arc-melted ingots, two of a titanium-7 percent manganese alloy and the third of unalloyed titanium, were forged and rolled into 3/4-inch plate; comparative data were obtained on these processes.

    Jan 1, 1955

  • NIOSH
    An Ergonomic Evaluation Of Excavating Operations: A Pilot Study

    By Bryan Buchholz, N. Kumar Kittusamy

    Previous studies indicate that operators of heavy construction equipment are afflicted by musculoskeletal injuries of the arms, shoulders, neck, and lower back. These injuries appear to be due to exce

  • NIOSH
    IC 8259 Petroleum Coke On The West Coast Of The United States - Its Production, Utilization, And Role In The Conservation Of Petroleum (f8f1863e-fbb7-4c75-a3db-05c4bef2898e)

    By William J. Kemnitzer

    This study was made to show the growth of petroleum coking and to deter- mine trends and characteristics of marketing and utilization of coke on the West Coast, comparing these data with those of the

    Jan 1, 1965

  • NIOSH
    RI 8007 Improvements in Ferric Chloride Leaching of Chalcopyrite Concentrate

    By F. P. Haver

    A method to recover copper and elemental sulfur from chalcopyrite concen¬trate, using a ferric chloride leach, CuFeS2 + 3FeCl3 ? CuCl + 4FeCl2 + 2S, was reported by the Federal Bureau of Mines i

    Jan 1, 1975

  • NIOSH
    Technology News - No. 501 -Measuring Very Low Air Velocities in Underground Metal/Nonmetal Mines

    Objective To accurately measure very low air velocities (0-100 ft/min) in U.S. large-opening underground metal/nonmetal mines. Background Hundreds of metal/nonmetal underground mines operate

    Jan 1, 2003

  • NIOSH
    IC 8259 Petroleum Coke On The West Coast Of The United States - Its Production, Utilization, And Role In The Conservation Of Petroleum

    By William J. Kemnitzer

    This study was made to show the growth of petroleum coking and to determine trends and characteristics of marketing and utilization of coke on the West Coast, comparing these data with those of the Un

    Jan 1, 1965

  • NIOSH
    Mine Fire Detection In The Presence Of Diesel Emissions

    By C. P. Lazzara, R. A. Franks, G. F. Friel, J. C. Edwards, J. J. Opferman

    A series of four coal combustion experiments was conducted at the National Institute for Occupational Safety and Health's (NIOSH) Pittsburgh Research Laboratory (PRL) in the Safety Research Coal

  • NIOSH
    RI 5288 Methane Buildup During Cutting And Continuous Mining Operations ? Introduction

    By R. W. Stahl

    Methane, a highly explosive gas evolved during the coal-formation process, is one of the hazards of mining most difficult to overcome. It is retained between particles of coal and entrapped in strata

    Jan 1, 1956

  • NIOSH
    Appendix A - Concentrations Of Respirable Coal Mine Dust And Respirable Crystalline Silica In Underground And Surface Coal Mines

    Table A-1. Number of underground coal mines and samples collected for underground occupations, 1988-92 [ ]

    Jan 1, 1997

  • NIOSH
    """Piggy Back"" Mechanism with Calcium Explains How SilicaExerts Its Toxicity to Phagocytic Cells"

    By C. Van Dyke, K. Van Dyke, J. Gutierrez, C. Nowack

    "Using propidium assay and flow cytometry, we examined how silica exerts its toxicity toward phagocytic cells employing the human neutrophil as a model. This toxicity appears to be associated with cal

    Nov 1, 1995

  • NIOSH
    Second Quarter 1984 General Economic And Mineral Industry Performance - The U.S. Economy

    General economic conditions continued to improve in the second quarter of 1984 as real gross national product advanced at an annual rate of 7.5 percent (table 1). This followed an even larger first qu

    Jan 1, 1984

  • NIOSH
    Fourth-Quarter 1986 Economic Activity And First-Quarter 1987 Outlook - Fourth Quarter And 1986

    By Keith L. Harris

    Real2 gross national product (GNP) grew at a seasonally adjusted annual rate of 1.3% in the fourth quarter and at 2.5% for all of 1986, according to the most recent Department of Commerce estimates ta

    Jan 1, 1987

  • NIOSH
    MLA 82-82 - Mineral Investigation Or The Dardanelles Rare II Areas (Nos. 4982 And 5982), Alpine And El Dorado Counties, California ? Summary

    By Douglas F. Scott

    Zinc, silver, copper, and tungsten are the principal minerals in Dardanelles RARE II area (No. 4982). Zinc with associated silver and copper occurs in a persistent shear zone in metasedimentary rocks

    Jan 1, 1982

  • NIOSH
    Review Of The Mineral Industries (f345b2f0-b84b-4ad6-b13e-f97e986a14e9)

    By Barry W. Klein

    The U.S. economy was considerably stronger in 1976 than in 1974 or 1975. Real gross national product (GNP) rose sharply in the first quarter of 1976 and then increased at a more moderate rate for the

    Jan 1, 1978