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  • NIOSH
    RI 8524 Electrowinning Zinc From Zinc Chloride in Monopolar and Bipolar Fused-Salt Cells

    By S. D. Hill

    To help insure the continued viability of the minerals and materials sector of the U.S. economy, the Bureau of Mines is conducting research and disseminating technology that will result in more effici

    Jan 1, 1981

  • NIOSH
    OFR-65-85 Recommendations For Minimal Luminance Requirements For Metal And Nonmetal Mines

    By J. O. Merritt

    The primary objective of this research program was to recommend ranges of minimum luminance for safety in underground metal and nonmetal mining. Visual tasks critical to safety were identified and ran

    Jan 1, 1983

  • NIOSH
    IC 7285 Geophysical Abstracts 116 January-March 1944 - 1. Gravitational Methods

    7253. Arkhangelsky, A. D. Geological Results of the General Magnetometric and Gravimetric Surveys of the U.S.S.R. (in Russian). Internat. Geol. Cong., Rep. of the 17th Sess., Moscow-Leningrad, 1937, v

    Jan 1, 1944

  • NIOSH
    RI 9210 - Hydrometallurgical Recovery of Critical Metals From Hardface Alloy Grinding Waste: A Laboratory Study

    As part of the Bureau of Mines program to reduce U.S. reliance on foreign suppliers of strategic and critical metals, research was conducted to improve technology for the recovery of critical metals f

    Jan 1, 1988

  • NIOSH
    RI 4569 Relative Reducibility Of Some Iron Oxide Materials

    By E. P. Barret

    Differences in the reducibility of iron oxide materials have been recognized for a long time. Limonites are deoxidized more readily than hematites, and unaltered magnetites are the most difficult to d

    Jan 1, 1949

  • NIOSH
    Evaluation Of Deep-Seated Crib Block Fires And Direct Application Fire Suppression Agents

    By M. A. Trevits, J. E. Urosek, A. C. Smith, M. P. Valoski

    Unlike other types of mining accidents, where an incident generally involves only a few workers, the danger of a mine fire extends to every person working in the underground environment. Mine fires ca

  • NIOSH
    RI 7962 In Situ Determination of Rock Behavior by Overcore Stress Relief Method, Physical Property Measurements, and Initial Deformation Method

    By Eugene H. Skinner

    This Bureau of Mines report describes the fieldwork and subsequent analysis to determine physical properties, stress distribution, and several aspects of rock behavior as a necessary evaluation for a

    Jan 1, 1974

  • NIOSH
    OFR-112-81 Evaluation Of Proximity Warning Devices

    By T. C. Green

    A two-phase program evaluated commercial proximity warning devices and then served to design and develop an automatic electrostatic field strength measurement device with improved performance. The Pha

    Jan 1, 1981

  • NIOSH
    RI 5805 Development Of A 10,000-Ampere Cell For Electrorefining Titanium ? Summary

    By F. P. Haver

    The Federal Bureau of Mines developed a 10,000-ampere cell to determine the economic feasibility of producing high-purity electrolytic titanium from mill scrap or offgrade sponge. Operating variables

    Jan 1, 1961

  • NIOSH
    RI 3320 Diesel Mine Locomotives - Development And Use In European Coal Mines ? Introduction

    By George S. Rice

    In response to numerous requests for information as to the status of internal-combustion mine locomotives of the Diesel type that use heavy or non- volatile oil for fuel, with special reference to the

    Jan 1, 1936

  • NIOSH
    RI 4330 Concentration of Oxide Manganese Ores from the Aguila District, Arizona

    By D. T. Holmes, W. G. Sandell

    "INTRODUCTION Three representative lots of ore wore obtained from the Aguila minim district in Arizona during the Bureau's exploration of manganese deposits there. Since only selectively mined ore fro

    Aug 1, 1948

  • NIOSH
    OFR-47-77 Reducing The Operator Sound Level Of A Mining Service Vehicle - A Demonstration Project

    By G. G. Huggins

    A demonstration project has been completed to reduce the operator sound level of an underground service vehicle, a personnel dispatch wagon, to go dB(A) or less. The program objective was to implement

    Jan 1, 1975

  • NIOSH
    RI 4199 Reduction of Phosphorus Content in Iron Ore and Concentrate from Iron Mountain, Mo.

    By H. Kenworthy

    "INTRODUCTION ..Although the occurrence of iron ore in Missouri was recognized by Marquette as early as 1673, the first known mining and smelting operation was conducted in 1815. This operation was ne

    Feb 1, 1948

  • NIOSH
    IC 8796 Cost Of Producing U308 From Ammonium Bicarbonate In Situ Leach Solution By The Multiple-Compartment Ion-Exchange System

    By Masami Hayashi

    The Bureau of Mines estimated the cost for ,3 uranium ion-exchange recovery system using five grades of 17.0, leach solution producing 815,570 pounds of U 0? per year from an ammonium bicarbonate in s

    Jan 1, 1979

  • NIOSH
    RI 7998 - Noise Abatement Of Pneumatic Rock Drill

    By C. R. Summers, J. N. Murphy

    In response to the Coal Mine Health and Safety Act of 1969, mandatory noise standards have been developed that specify time-noise limits of mine personnel exposure. Most affected by elevated noise lev

    Jan 1, 1974

  • NIOSH
    OFR-46-77 Propagation Of Radio Waves In Coal Mines - I. Executive Summary - A. Objective

    By Robert L. Lagace

    The objective of this task was to perform theoretical analyses related to identifying and increasing the understanding of wireless propagation mechanisms in mines, and for predicting the performance r

    Jan 1, 1975

  • NIOSH
    OFR-76-80 The Application Of Advanced Mine Air Monitoring Techniques To Mines Using Diesel Powered Equipment

    By John H. Johnson

    White Pine Mine section designated for exhaust emissions studies. The MTU Mine Air Monitoring Laboratory was used to gather temperature and C02 concentration data at 10 locations. The data substantiat

    Jan 1, 1979

  • NIOSH
    IC 8120 Columbium And Tantalum - A Materials Survey ? Introduction And Summary

    By William R. Barton

    COLUMBIUM (niobium) and tantalum are similar refractory metals with closely related properties and uses and close association in ore deposits. Until recently both metals, particularly columbium, were

    Jan 1, 1962

  • NIOSH
    RI 7596 Hydraulic Fracturing Of Wyoming Green River Oil Shale: Field Experiments, Phase I

    By H. E. Thomas

    [The Bureau of Mines has conducted a field hydraulic fracturing experiment to determine the preferential orientation of induced fractures in oil shale at a depth of about 400 feet in the Green River B

    Jan 1, 1972

  • NIOSH
    RI 2833 Some Methods Of Producing Flowing Wells On The Salt Creek Field And Their Effect On Gas-Oil Ratios

    By K. B. Nowels

    "INTRODUCTION For the last several years the oil industry has been turning more and more toward conservation arid the study of related production problems. It is generally conceded that ultimate recov

    Oct 1, 1927