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  • NIOSH
    Bulletin 118 Abrstracts of Current Decisions on Mines and Mining

    By J. W. Thompson

    A contract stipUlating for the delivery of quantities of phosphate rock" f. o. b. mines," and stipUlating that" while this contract is in form an absolute sale for a fixed quantity in each year, it is

    Jan 1, 1916

  • NIOSH
    Fluorine Micas

    By Haskiel R. Shell

    While the original purpose of the Bureau of Mines work on fluorine micas was to synthesize large single crystals or film suitable to replace natural muscovite or phlogopite, the objective was broadene

    Jan 1, 1969

  • NIOSH
    RI 6849 A Knudsen Effusion Apparatus For Vapor Pressure Measurements

    By Stephen D. Hill

    The Bureau of Mines devised and constructed a modified Knudsen effusion apparatus, permitting a constant measure of the weight of effusing vapor, to determine the equilibrium vapor pressure of metal h

    Jan 1, 1966

  • NIOSH
    RI 9456 - A Simple and Accurate Method for Calculating Viscosity of Gaseous Mixtures

    By Thomas A. Davidson

    The Bureau of Mines Helium Field Operations has developed a simple and accurate method for calculating the viscosity of gas mixtures. Only the composition of the mixture and the molecular weights and

    Jan 1, 2010

  • NIOSH
    RI 2121 The Natural Hydrocarbons; Gilsonite, Elatrite; Wurtzilite, Grahamite, Ozokerite And Others

    By Raymond B. Ladoo

    [Inquiries are frequently received by the Bureau of Minas relative to occurrence, mining, treatment and utilization of the natural hydrocarbons' such as gilsonite, elaterate, wurtzilite, grahamit

    Jan 1, 1920

  • NIOSH
    RI 3279 Base Of A Crude Oil

    By E. C. Lane

    During the past 15 years the Bureau of Mines has made and published several hundred analyses of typical petroleums and has developed a system of interpreting the analyses and of classifying crude oils

    Jan 1, 1935

  • NIOSH
    RI 9193 - Preliminary Evaluation of the Relationship of Bit Wear to Cutting Distance, Forces, and Dust Using Selected Commercial and Experimental Coal-and Rock-Cutting Tools

    By M. N. Plis

    This report describes the initial results of long-range research on bit life conducted by the Bureau of Mines. Three commercial bit designs -a round-nose radial, 60° conical, and 90° conical with tung

    Jan 1, 1988

  • NIOSH
    IC 7473 Making Iron Powder in the Tunnel Kiln

    By V. H. Gottschalk

    Among the procedures developed by the Germans for providing the tonnage of iron powder needed to make rotating bands for artillery shells is the use of a ceramic tunnel kiln, not only for finishing th

    Aug 1, 1948

  • NIOSH
    OFR-1-80 Underground Disposal Of Retorted Oil Shale For The Paraho Retorting Process

    By H. W. Earnest

    This report covers the results of a two-phase study to determine the feasibility of underground disposal of retorted oil shale. Two mining methods, chamber and pillar mining and sublevel stoping, were

    Jan 1, 1978

  • NIOSH
    Potential Role of Silicon-Oxygen Radicals in Acute Lung Injury

    By N. S. Dalal, X. Shi, V. Vallyathan

    "INTRODUCTIONThis paper summarizes our recent investigations of the potential role of silicon-oxygen based free radical species in the biochemical mechanism of the lung injury caused by the inhalation

    Jan 1, 1988

  • NIOSH
    IC 9226 A Computer Program To Rapidly Screen Explosion-Proof Enclosures

    By Frank T. Duda

    A U.S. Bureau of Mines interactive FORTRAN computer program can screen explosion-proof enclosures intended for underground service. The program incorporates important information and criteria to assis

    Jan 1, 1989

  • NIOSH
    OFR-115(2)-83 Development Of An Improved Man Transit Vehicle -Volume 2

    By Bruce Pinkston

    This report presents a description of the Prototype Demonstration Vehicle and Safety Guidelines developed under U.S. Bureau of Mines Contract No. JO 366003, ?Improving Man Transit Safety. This veh

    Jan 1, 1981

  • NIOSH
    OFR-102-80 Evaluation Of The Kloswall Longwall Mining System

    By Paul J. Guay

    This report presents the results of evaluating a longwall mining system specifically designed to extract a very deep web (60 inches or deeper) from a longwall panel. The report includes a productivity

    Jan 1, 1978

  • NIOSH
    RI 4306 A Combination Cleaning And Dewatering Process For Treating Fine Sizes Of Coal

    By B. W. Gandrud

    To say that the treatment and handling of the "fines" is the most difficult phase of coal preparation is probably an understatement of facts. It is the fine sizes from about 1/16-inch to 0 that are ma

    Jan 1, 1948

  • NIOSH
    IC 8746 Safety Recommendations For Ammonium Nitrate-Based Blasting Agents - Revision Of Information Circular 8179

    By G. H. Damon

    Since 1963, Bureau of Mines Information Circular 8179 has served the mining industry as a fundamental safety guide in the field of blasting agents. In the intervening 14 years, many changes have occur

    Jan 1, 1977

  • NIOSH
    RI 7712 Analyses Of Tipple And Delivered Samples Of Coal - Collected During Fiscal Year 1972

    By J. B. Janus

    This report, the 22d in a series, gives analytical data showing composition and quality of tipple and delivered samples of coal collected during fiscal year 1972. This coverage lists mines located in

    Jan 1, 1973

  • NIOSH
    RI 5818 Preparation Characteristics Of Coal From Harrison County, W. Va. ? Summary

    By T. E. Gray

    This report describes the preparation characteristics of the significant coalbeds in Harrison County, W. Va. It is one in a series of Federal Bureau of Mines reports planned to determine coals suitabl

    Jan 1, 1961

  • NIOSH
    IC 7951 Phosphate Rock (In Two Parts) 2. Processing And Utilization ? Introduction

    By William H. Waggaman

    The United States not only is the largest producer of phosphate rock but also manufactures and consumes greater quantities of phosphate products than any other country. New and expanding uses will inc

    Jan 1, 1960

  • NIOSH
    RI 5177 Investigation Of Copper-Nickel Mineralization In Kawishiwi River Area, Lake County, Minn. ? Summary

    By W. A. Grosh

    In 1951 the Federal Bureau of Mines became interested in the reports of copper-nickel mineralization in northern Minnesota. Several outcrops on the north side of the Duluth gabbro in the Kawishiwi Riv

    Jan 1, 1955

  • NIOSH
    RI 7017 Electrochemical Reduction Of Coal

    By Heinz W. Sternberg

    A method for the electrochemical reduction of the benzene ring was developed and applied to the electrochemical reduction of coal. Successive electrochemical reductions of a vitrain from low-volatile

    Jan 1, 1967