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  • NIOSH
    RI 2475 The Metallurgical Treatment of Zinc-Retort Residues

    By B. M. O'Harra

    The residues resulting from the retort distillation of zinc ores have from 40 to 75 per cent of the weight of the original ore and contain from 5 to 15 per cent zinc . A rough estimate indicates that

    Apr 1, 1923

  • NIOSH
    RI 6737 Tin-Lode Investigations, Cape Mountain Area, Seward Peninsula, Alaska

    By John J. Mulligan

    The Bureau of Mines investigated the tin deposits of the Cape Mountain area during July and August 1962 to test the effectiveness of detrital-cover sampling in permafrost areas as a relatively cheap a

    Jan 1, 1966

  • NIOSH
    The Effects of Water Emulsified Fuel on Diesel Particulate Matter Concentrations in Underground Mines

    By L. D. Patts, J. D. Noll, S. E. Mischler, G. H. Schnakenberg

    In this study, we evaluated the ambient diesel particulate matter (DPM) concentrations (at the intakes and exhausts of the mine) as the entire vehicle fleet of a stone mine switched from using 35% bio

  • NIOSH
    IC 8177 Oil Recovery By Miscible-Phase Displacement: A Bibliography ? Introduction

    By L. K. Weaver

    The Bureau of Mines has started an engineering study of oil recovery by miscible-phase displacement. As a preliminary part of the investigation a literature and patent study was made to prevent duplic

    Jan 1, 1963

  • 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
    EM Rescue (Location) System For Deep Mines Phase II - Build And Test Breadboard Equipment

    By I. D. Schleicher, L. H. Rorden, F. B. Curry, T. C. Moore

    The purpose of this program is to extend electromagnetic (EM) techniques for use in locating miners trapped in mines as deep as 1000 m. A previously developed EM system is considered adequate for use

  • NIOSH
    Mining And Mineral Operations In The South-Central States - A Visitor Guide ? Introduction

    Minerals are vital to any industrialized civilization. Annually, the United States uses more than 4 billion tons of new mineral materials, or about 40,000 pounds per person-about half being mineral fu

    Jan 1, 1977

  • NIOSH
    IC 8103 Cobalt - A Materials Survey ? Introduction And Summary

    By Joseph H. Bilbrey

    COBALT is a silvery gray metal which closely resembles nickel in appearance and properties although it is somewhat harder and more brittle. It is rather widely disseminated and is estimated to make up

    Jan 1, 1962

  • NIOSH
    Use of Rocsil® Foam to Remotely Construct Mine Seals

    By Cliff McCartney, Michael A. Trevits

    The National Institute for Occupational Safety and Health (NIOSH) is conducting a program of research to evaluate and improve remote mine seal construction technology for mine fire control and suppres

  • NIOSH
    OFR-116-79 An Evaluation Of The Fire And Explosion Hazards Of Oil Shale Mining And Processing

    By R. B. Crookston

    Oil shales differ from coals in that they contain less carbonaceous material, convertible to volatile hydrocarbons, and more inorganic rock. In all pre-commercial oil shale development, involving exte

    Jan 1, 1978

  • NIOSH
    RI 3038 Survey of Fuel Consumption at Refineries in 1929

    By G. R. Hopkins

    "Refiners are generally considered solely as fuel producers, but actually they also comprise a group one of the largest consumers of fuel. For example, during the year 1929 the refineries-burned 51,54

    Sep 1, 1930

  • NIOSH
    Roof Screening for Underground Coal Mines: Recent Developments

    By Sean Gallagher, Gene Wilson, Christopher Mark, Craig S. Compton, Gregory M. Molinda

    Falls of small pieces of rock from between roof bolts continue to cause fatalities and to injure hundreds of coal miners each year. Roof screen is the most effective way to prevent these incidents, bu

  • NIOSH
    RI 3452 Studies Of Roof Movement In Coal Mines - 2. Crucible Mine Of The Crucible Fuel Co. ? Introduction (b2c06069-2efb-4770-a82c-ff6e6ca0ac43)

    By E. R. Maize

    This report is t e second of s series on roof movement in coal mines. The first (R. I. 3355)4/ dealt with convergence of roof and floor and movement of the surface accompanying and following extractio

    Jan 1, 1939

  • NIOSH
    RI 8730 Sealing Openings in Abandoned Mines by Pneumatic Stowing

    By Slavoljub D. Maksimovic

    The Bureau of Mines, through a memorandum of agreement with the State of Ohio, tested a method of constructing seals in abandoned mine openings in Ohio by means of pneumatic stowing of crushed limesto

    Jan 1, 1982

  • NIOSH
    IC 6982 Pumping Operations In The Cripple Creek District, Colo. - Introduction

    By Jos. R. Guiteras

    This paper describes the pumping operations at the Ajax, Cresson, and Vindicator dines in the Cripple Creek mining district of Colorado during the summer of 1936. At that time the three mines wore pum

    Jan 1, 1937

  • NIOSH
    The Mineral Industry Of Other Central African Countries - Cameroon (b64d7e3f-2b3b-40e8-b713-920eb343c7a5)

    By Suzann C. Ambrosio

    Cameroon's mining industry continued to be dominated by crude petroleum. The value of petroleum output was estimated at $1 billion.2 The 1982 gross domestic product (GOP) was approximately $8.4 b

    Jan 1, 1984

  • NIOSH
    OFR-15(2)-78 Evaluation Of The Application Of Repetitive Fuel/Air Explosions To Rock Ripping - Final Report - Phase II

    By John W. Colburn

    A tractor-integrated version of an explosive ripping system was developed for mining application. This system utilizes diesel fuel and a tractor-mounted blower supplying 30 psig compressed air to a tw

    Jan 1, 1977

  • NIOSH
    The Mineral Industry Of Other Areas Of The Far East And South Asia - Bangladesh (0e11f91d-11fe-413b-9cfb-2647e57b907e)

    By E. Chin

    The domination of Bangladesh's mineral industry by natural gas was in for some possibly significant changes. A modest flow of crude oil was struck in a gas development well in the northeastern co

    Jan 1, 1988

  • NIOSH
    RI 7424 Rock Fragmentation By Creating A Thermal Inclusion With Dielectric Heating

    By K. Thirumalai

    This study forms a part of Bureau of Mines continuing research on thermal fragmentation of rocks. The potential of internal heating techniques for rock fragmentation is discussed. A concept of rock fr

    Jan 1, 1970

  • NIOSH
    RI 5038 Operation Of A Powdered-Coal Gasifier At Louisiana, Mo. ? Summary And Conclusions

    By R. G. Dressler

    The design and operation of the Koppers powdered-coal gasifier and its auxiliaries at Louisiana, Mo., are described. This unit was designed to convert 1 ton of coal per hour with oxygen and superheate

    Jan 1, 1954