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  • NIOSH
    RI 8096 Free Energies of Formation of Ferrous and Ferric Fluoride by Electromotive Force Measurements

    By Seth C. Schaefer

    The Bureau of Mines studied the standard free energies2 of formation of ferrous fluoride (FeF2) and ferric fluoride (FeF3) with high-temperature galvanic cells employing calcium fluoride doped with 1

    Jan 1, 1975

  • NIOSH
    IC 7694 It Couldn't Happen (A Description Of Five Unusual Fatal Mine Accidents)

    By D. S. Kingery

    This study describes five fatal accidents so unusual in occurrence that the chain of circumstances bringing them about may never be duplicated. The intent of this publication is to illustrate that eve

    Jan 1, 1954

  • NIOSH
    Recovering Precious Metal Values From Finely-Ground Tailing Material - Objective

    Provide a means of recovering precious metal values from finely ground tailing materials. Approach Determine the procedures needed for agglomerating the finely ground material for subsequent h

    Jan 1, 1986

  • NIOSH
    RI 2128 Sulphur Dioxide as Factor in Smoke Problem, Salt Lake City

    By G. St John Perrott

    "The United States Bureau of Mines is cooperating with the State of Utah and the City of Salt Lake in an investigation of methods of abating the smoke nuisance in Salt Lake City. In the course of this

    May 1, 1920

  • NIOSH
    A Statistical Treatment for Quantitative SEM-EDS Analysis as Applied to Automated Analysis of Many Particles

    By T. F. Dumm, L. G. Austin

    "INTRODUCTIONGomez and Austin (1,2) have recently described calibration procedures for quantitative chemical analysis of particles by energy dispersive spectroscopy using particles mounted and polishe

    Jan 1, 1989

  • NIOSH
    RI 4694 Investigation Of The Cove Meadow Copper Deposit, Humboldt County, Nev.

    By Russell R. Trengove

    The Bureau of Mines developed by core drilling the Cove Meadow copper property, also known as the Patterson property, from May 6, 1949, to August 6, 1949. It is in the Cove Meadow mining district, nor

    Jan 1, 1950

  • NIOSH
    Production Of High-Purity Synthetic Rutile From A Domestic Ilmenite Concentrate

    By Gerald W. Elger

    A new process under development by the U.S. Bureau of Mines for producing synthetic rutile from ilmenite is described. Rutile formation is based on oxidation and fluxing of titania slag produced by el

    Jan 1, 1971

  • NIOSH
    RI 3302 Microcolorimetric Determination Of Benzene In Blood And Urine ? Introduction

    By S. J. Pearce

    The need for a simple, very sensitive, and accurate method for the determination of benzene in blood and urine vas evident throughout a recent study of chronic benzene (C6H6) poisoning conducted coope

    Jan 1, 1936

  • NIOSH
    RI 8543 Behavior of Cadmium During Roasting of Zinc Concentrate

    By Arne Landsberg

    The Bureau of Mines has undertaken research to elucidate the chemistry involved in the efficient recovery and control of minor elements in base metal smelting operations. These elements should be effe

    Jan 1, 1981

  • NIOSH
    RI 4661 Investigation Of The Winterboro Talc Deposits, Talladega County, Ala.

    By Jr. Reed

    The only known large deposits of talc in Alabama occur near Winterboro, Talladega County. Preliminary examinations were made, and work by the Bureau of Mines was recommended. The deposits were invest

    Jan 1, 1950

  • NIOSH
    IC 6322 Mining Methods And Costs At The Teck-Hughes Gold Mines (Ltd.), Kirkland Lake, Ontario ? Introduction

    By R. J. Henry

    This paper describing the mining practices at the Teck-Hughes mines at Kirkland Lake, Ontario, is one of a series being prepared by the United States Bureau of Mines on mining practices, methods, and

    Jan 1, 1930

  • NIOSH
    Noise Assessment Of Stone/Aggregate Mines: Six Case Studies

    By D. R. Babich, E. R. Bauer

    The U.S. National Institute for Occupational Safety and Health (NIOSH) is conducting a cross-sectional survey of equipment sound levels and worker noise exposures in the stone/aggregate mining industr

  • NIOSH
    RI 5214 Zirconium Purification, Using A Basic Sulfate Precipitation ? Summary

    By R. H. Nielsen

    A new, cheaper precipitation scheme has been developed to produce purified zirconium oxide, Technical-grade sulfuric acid is used to precipitate a basic zirconium sulfate from a hot dilute hydrochlori

    Jan 1, 1956

  • NIOSH
    RI 4405 Effect Of Operating Variables Upon The Fischer-Tropsch Synthesis

    By Sol Weller

    The Fischer-Tropsch synthesis consists of the formation of long-chain hydrocarbons by passage of carbon monoxide-hydrogen mixtures over metal catalysts, usually based on iron, cobalt, nickel, or ruthe

    Jan 1, 1949

  • NIOSH
    RI 8619 Removal of Organic Contaminants From Aluminum Chloride Solutions

    By Jack C. White

    The Bureau of Mines, in its efforts to insure the continued viability of the domestic minerals economy, has been engaged for several years in research on the extraction of alumina from domestic, nonba

    Jan 1, 1981

  • NIOSH
    A gas pressure-based drift round blast design methodology

    By William Hustrulid

    The National Institute for Occupational Safety and Health (NIOSH), as part of a comprehensive program to improve mine safety through the widespread acceptance of careful excavation principles in drift

    Jan 1, 2007

  • NIOSH
    Explosion Pressure Design Criteria For Seals In U.S. Coal Mines - An Update On Work At NIOSH

    By R. Karl Zipf

    A fatal explosion in a sealed area at the Sago Mine in 2006 prompted researchers and regulators in the United States to re-examine the requirements for explosion-resistant mine seals. Seals are used i

    Jan 1, 2009

  • NIOSH
    RI 3084 The Propulsive Strength and Rate of Pressure Development of the Cardox Blasting Device

    By G. St. J. Perrott, N. A. Tolch

    "PURPOSE OF TESTSThe propulsive strength4 developed by the Cardox blasting device depends on the thickness of disk, weight of heater element, and weight of carbon dioxide charge. It might be supposed

    Apr 1, 1931

  • NIOSH
    OFR-155-81 Noise Control Of A Mine Operated Rail Personnel Carrier - Volume II. Underground Evaluation

    By A. G. Galaitsis

    The two volumes of this report summarize the noise control work performed by BBN on a rail personnel carrier operated in coal mines. Volume I of the report - submitted November 1977 - describes th

    Jan 1, 1980

  • NIOSH
    RI 7580 Comparison Of Techniques For Electrowinning Tungsten From Scheelite

    By John M. Gomes

    The Bureau of Mines investigated two techniques for removing CaO from scheelite (CaW04) prior to electrolysis. In the first technique, a crude tungstic oxide (WO3) containing 0.15-percent lime (CaO) w

    Jan 1, 1971