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  • NIOSH
    OFR-155-82 Longwall Mining Principles For Safely Working Steep Coal Seams

    By Roger F. J. Adam

    This report summarizes the principles of safely working steep coal seam using longwall mining methods. It presents the state-of-the-art and identifies the problems which result from seam inclination.

    Jan 1, 1981

  • NIOSH
    RI 4966 Estimate of Known Recoverable Reserves of Coking Coal in Wyoming County, W. Va.

    By Joseph J. Wallace, William H. Tavenner, D. A. Reynolds, John M. Provost, James J. Dowd, R. F. Abemethy

    "CONCLUSIONSThe investigation shows that there are 5 coal beds of major importance in Wyoming County from the standpoint of present production - Pocahontas No. 3, No. 2 Gas, Sewell, Beckley, and Eagle

    Apr 1, 1953

  • NIOSH
    OFR-121(1)-82 Health And Safety Analysis On Support Walls

    [lllc purpabr at thla report Vd, Lu JeLermlnr the health ar1J sdfet?; Nene11Le a octatc?J ultll Lne oar L.t support Ydlll ..up.I,ated lu dltetllative cupPurt svsLem, larrellLty hcle.g uaeJ af the Len,

    Jan 1, 1980

  • NIOSH
    Mineral Investigation Of The Lower Saline Valley Wilderness Study Area (BLM No. CDCA-117A), Inyo County, California ? Summary Statement

    By Clayton M. Rumsey

    No producing or developing mines nor known mineral resources are in the Lower Saline Valley Wilderness Study Area. The inactive Bonanza Prospect has low potential for copper-gold-silver resources. Sto

    Jan 1, 1984

  • NIOSH
    OFR-66-79 Development And Fabrication Of A Prototype Fibrous Aerosol Monitor (FAM)

    By Pedro Lilienfeld

    This report describes a program whose objective was to develop, design, fabricate and laboratory-test two prototype instruments capable of real-time selective detection and measurement of airborne fib

    Jan 1, 1977

  • NIOSH
    RI 9571 - In-Mine Evaluation of Catalyzed Diesel Particulate Filters at Two Underground Metal Mines

    By Winthrop F. Watts

    The U.S. Bureau of Mines evaluated the performance of a catalyzed diesel particulate filter (CDPF) and a CDPF combined with a diesel oxidation catalyst (DOC) at two metal mines. This report describes

    Jan 1, 2010

  • NIOSH
    OFR-77-77 Further Development And Evaluate Fluorescent Lighting Systems For Underground Mines

    By Albert Ketler

    [Early Bureau of Mines research had produced a fluorescent mine illumination system which was approved by MESA under Schedule 29A for use as portable equipment Intense industry preference for machine-

    Jan 1, 1976

  • NIOSH
    OFR-103(1)-79 Control Of Vibration And Blast Noise From Surface Coal Mining - Volume I

    By John F. Wiss

    A series of controlled experiments was conducted at four surface coal mines to study the effects of certain blast parameters upon the ground and air vibration. Preliminary scale-model blasts were cond

    Jan 1, 1978

  • NIOSH
    RI 7612 Effect Of Preheating Upon Metallization Of Iron Ore Pellets

    By R. B. Schluter

    Drying and preheating (partial induration) the green, unfired iron ore pellets is a means of reducing the energy required to produce metallized pellets. The Bureau of Mines processed three magnetite a

    Jan 1, 1972

  • NIOSH
    Thermodynamic Properties Of Carbides, Nitrides, And Other Selected Substances

    By L. B. Pankratz

    Thermodynamic data on carbides, nitrides, and other selected substances were reviewed, evaluated, and compiled at the U.S. Bureau of Mines Albany Research Center. Values for Cp°, S°, H° - H°298, -(G°

    Jan 1, 1994

  • NIOSH
    RI 8903 - Continuous Beneficiation of Dolomitic Phosphate Ores

    By B. E. Davis

    Over 80 pct of domestic phosphate rock, which is the starting material for phosphorus-containing fertilizers, comes from central Florida deposits. As K-her grade deposits are depleted, lower grade pho

    Jan 1, 1984

  • NIOSH
    OFR-129-76 Ignition Suppression Device

    By Will B. Jamison

    An ignition detection and suppression system was developed under the scope of this contract. The objective of this machine mounted system was to detect flames caused by frictional sparking from the cu

    Jan 1, 1976

  • NIOSH
    OFR-145-81 Longwall Subsidence Case History Numbers 3 And 4 - Northern Appalachian Coal Region

    By Larry R. Powell

    As part of the Bureau of Mines effort to establish a comprehensive subsidence data base for subsidence technology development, subsidence and related data are being compiled for various mining, geolog

    Jan 1, 1981

  • NIOSH
    American Lignites: Geological Occurrence, Petrographic Composition, And Extractable Waxes ? Introduction

    By W. A. Selvig

    EQUIREMENTS of montan wax for industrial use in the United States before World War II were met by imports, nearly all of which came from Germany. An important industry for extraction and refinement of

    Jan 1, 1950

  • NIOSH
    IC 6125 The Free Energy Of Water, Carbon Monoxide, And Carbon Dioxide

    By E. D. Eastman

    The basic character of the free energy r data relating to water and the oxides of carbon makes it desirable that the most representative values that can be obtained should be constantly available. The

    Jan 1, 1929

  • NIOSH
    Bulletin 36 Alaskan Coal Problems

    By Walter L. Fisher

    The public interest in the Alaskan situation is such that, with the consent of the President, I have concluded, at the request of the American Mining Congress, to make at this time a candid, if somewh

    Jan 1, 1911

  • NIOSH
    RI 3457 Friability, Slacking Characteristics, And Low-Temperature Carbonization Assays Of Subbituminous Coals Of The Denver, Colo. Region

    By Parry. V. F., John B. Goodman

    "INTRODUCTION The Denver region coal field, covering an area of approximately 7,640 square miles, extends from the Wyoming State line to the middle of El Paso County, Colo. The coal in this region is

    Aug 1, 1939

  • NIOSH
    OFR-103(1)-75 Circuit Breaker Development And Application - USBM Contract Phase I Report - Section 1. Program Objectives And Results - 1. 1 Background

    By D. A. Paice

    Direct current electrical systems are used in most coal mines primarily to power the main haulage trains and secondarily to feed other equipment and passageway lighting. Electrical power is supplied f

    Jan 1, 2012

  • NIOSH
    Advances In Remote Sensing Techniques For Monitoring Rock Falls And Slope Failures

    By E. L. McHugh, R. T. Mayerle, J. M. Girard

    Ground control problems at surface mining operations can occur for a variety of reasons. Stress, gravity loading, rock strength, geology, pore pressure, weather effects, underground workings, and many

  • NIOSH
    Results of Noise Measurements from Underground Testing of a Roof Bolting Machine Duty Cycle

    By Lynn Alcorn, Jeffrey Shawn Peterson

    Data collected by the Mine Safety and Health Administration (MSHA) has shown that roof bolting machine (RBM) operators are the second most likely type of underground mining machine operator to be are