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  • NIOSH
    RI 3183 Smelting in the Lead Blast Furnace

    By G. L. Oldright, Virgil Miller

    "This paper is the tenth 4 of a series on smelting in the lead blast furnace, and the fifth 5 on modifications brought about by the introduction of richer charges.ACKNOWLEDGMENTSAll of the data on han

    Aug 1, 1932

  • NIOSH
    RI 7607 An Experiment In Seismic Holography

    By G. L. Fitzpatrick

    Preliminary results of an experiment in seismic holography indicate that the techniques of acoustical holography may be successfully used with seismic waves to determine the size and general shape of

    Jan 1, 1972

  • NIOSH
    RI 7777 Effect Of Copper And Silicon On Selected Mechanical Properties Of Hot-Rolled Medium-Carbon Steels

    By Mark I. Copeland

    The Bureau of Mines investigated the effect of up to 1 wt-pct of copper and silicon on the heat treatment response and hardness, tensile, and impact properties of hot-rolled medium-carbon steels. The

    Jan 1, 1973

  • NIOSH
    RI 6020 Electron Micrographs Of Some Unusual Inorganic Fibers ? Introduction And Summary

    By Charles W. Huggins

    A study of the high magnification of some inorganic fibers which are found in nature or produced in the laboratory, has been conducted with the electron microscope. This series of electron microqraphs

    Jan 1, 1962

  • NIOSH
    OFR-61-83 Design, Construction & Development Of In Situ Mining Wells

    By David L. Shuck

    This report was prepared for the Bureau of Mines to describe the current methods of design, construction, and development of wells for in situ leaching of uranium. The discussion includes the alternat

    Jan 1, 1982

  • NIOSH
    OFR-47(1)-83 Ecological Studies On The Revegetation Process Of Surface Coal Mined Areas In North Dakota - 1. Executive Summary

    By Mohan K. Wali

    This report, the first in a series of 13 reports, provides a summary of 11 major topics on which individual reports have been prepared. These major topics are: (a) Nature of coal mine spoils, topsoils

    Jan 1, 1982

  • NIOSH
    IC 7740 Reconnaissance Of The "Red Bed" Copper Deposits In Southeastern Colorado And New Mexico ? Summary

    By John H. Soulé

    This paper describes the location and general features of the ?Red Bed? or sandstone copper deposits in southeastern Colorado and New Mexico. Most of the areas containing this type of deposit were vis

    Jan 1, 1956

  • NIOSH
    RI 8689 Flotation of Rare Earths From Bastnäsite Ore

    By E. Morrice

    As part of its efforts to maximize process efficiency and decrease energy requirements in mineral processes, the Federal Bureau of Mines has investigated methods for beneficiating bastnäsite ores from

    Jan 1, 1982

  • NIOSH
    Formula Predicts The Spontaneous Combustion Potential Of Bituminous Coals ? Objective

    To predict the spontaneous combustion potential of bituminous coals using a simple expression based on an easily acquired coal property. Background Approximately 20% of underground coal mine fir

    Jan 1, 1989

  • NIOSH
    Subsidence Prediction Using a Laminated, Boundary-Element Program

    By Keith A. Heasley, Timotlly M. Barton

    Historically, the surface subsidence over underground coal mines has been predicted using empirical profile or influence functions which have little or no connection to the actual mechanics of the sub

  • NIOSH
    IC 8826 Materials Recycling - An Overview Of The Sixth Mineral Waste Utilization Symposium

    This Bureau of Mines report reviews the information presented at the Sixth Mineral Waste Utilization Symposium cosponsored by the Bureau of Mines, U.S. Department of the Interior, and the IIT Research

    Jan 1, 1980

  • NIOSH
    IC 8859 An Introduction To The Mine Inspection Data Analysis System (MIDAS)

    By W. F. Watts

    This report describes the Mine Inspection Data Analysis System (MIDAS) developed by the Bureau of Mines to analyze the records of industrial hygiene samples collected by the Mine Safety and Health Adm

    Jan 1, 1981

  • NIOSH
    IC 8124 Technological And Economic Problems Of Rare-Earth-Metal And Thorium Resources In Colorado, New Mexico, And Wyoming ? Introduction

    By Francis J. Kelly

    This Bureau of Mines study was made to obtain and present facts concerning the production and marketing of rare-earth metals and thorium in the Central and Southern Rocky Mountains (Arizona, Colorado,

    Jan 1, 1962

  • NIOSH
    OFR-128-82 Contamination Of Ground And Surface Waters By Uranium Mining And Milling

    By James A. Brierley

    Wastewater from uranium mines in the Ambrosia Lake district near. Grants, New Mexico, U.S.A., contains uranium, selenium, radium, and molybdenum. The Kerr-McGee Corporation has a novel treatment proce

    Jan 1, 1981

  • NIOSH
    RI 7964 Physical Property Data on Coal Waste Embankment Materials

    By Richard A. Busch

    Inadequate engineering design criteria for coal refuse embankments has allowed hazardous impoundment structures in coal mining areas to be created. A necessary first step to develop adequate design cr

    Jan 1, 1974

  • NIOSH
    IC 8295 Coal Resources Of The Fabius-Flat Rock Area, Jackson County, Ala.

    By Reynold Q. Shotts

    A study was made of the coal resources of an area in Jackson County, Ala., forming a part of the Flat Rock, Henegar, and Stevenson quadrangles. The area studied is a portion of the Plateau coalfield o

    Jan 1, 1966

  • NIOSH
    IC 8863 Proceedings Of Seminar On The Role Of Overburden Analysis In Surface Mining, Wheeling, W. Va., May 6-7,1980 - Sponsored By The American Council For Reclamation Research And The Bureau Of Mines

    This Bureau of Mines publication contains the texts of the four papers presented at the May 6-7, 1980, seminar on the role of overburden analysis in surface mining. Coverage includes the geologic dist

    Jan 1, 1981

  • NIOSH
    IC 8762 Correlating Microfilm Mine Maps With Topographic Maps

    By David C. Uhrin

    Two improved methods have been developed to transfer microfilmed mine maps to suitable base maps showing surface features. The methods provide for (1) positioning and orienting maps; (2) merging adjac

    Jan 1, 1977

  • NIOSH
    RI 9333 - Evaluation of the Safety of the CSE SR-100 Self-Contained Self-Rescuer

    By R. W. Watson

    A belt-wearable self-contained self-rescuer (SCSR) manufactured by the CSE Corp. and designated the "SR-1OO" was evaluated for safety in the underground mine environment by the U.S. Bureau of Mines. T

    Jan 1, 1991

  • NIOSH
    RI 7298 Effect Of Increasing End Constraint On The Compressive Strength Of Model Rock Pillars

    By Clarence O. Babcock

    Model pillars of limestone, marble, sandstone, and granite with length-to-diameter (L/D) ratios of 3, 2, 1, 0.5, and 0.25 (0.286 for granite) were tested to failure in axial compression to determine t

    Jan 1, 1969