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  • NIOSH
    OFR-94-77 Study Of A Water Jet Continuous Coal Mining System

    By P. J. G. du Toit

    Coal has been mined by hydraulic means in various countries, i.e., the hydraulic excavation as well as the hydraulic transportation of coal has been practiced. The hydraulic breaking (excavating) of t

    Jan 1, 1977

  • SAIMM
    Fluidized Bed Roasting Of Micro-Pelletized Zinc Concentrate: Part I?Pellet Strength And Roasting Kinetics - Synopsis

    By S. Heukelman

    Zinc or, a zinc refinery in South Africa, uses oxygen enrichment of up to 26% O2 in its fluidizing air to increase concentrate-throughput in its fluidized bed roasters. The aim of the study is to dete

    Jan 1, 2011

  • SAIMM
    Viscoplastic behaviour of and damage to rock related to the design of underground waste depository cavities

    By A. Bouvard, N. Hoteit, E. Boidy, F. Pellet

    In the context of the construction of an Underground Research Laboratory devoted to the feasibility studies of radioactive waste deposits, it appears of the utmost importance to study the long-term be

    Jan 1, 2003

  • NIOSH
    RI 7320 The Sysrem Al4C3-AlN-Al203 - Powder Forming And Sintering Behavior, Phase Identification, And Refractory Composition Properties

    By Jack L. Henry

    The ternary system A14C3-AIN-Al203 has been examined to determine compositions which may display desirable high-temperature refractory properties. Powder methods were employed in the synthesis of all

    Jan 1, 1969

  • NIOSH
    IC 7257 Geophysical Abstracts 113 April-June 1943 - 1. Gravitational Methods

    6889. Aslakson, C. I., and Swick, C. H. Gravity Observations in Peru and Colombia. Coast and Geodetic Survey,-Special Pub. 233, U. S. Government Printing Office, Washington, D. C., 1943, 18 pp. (Price

    Jan 1, 1943

  • AIME
    Progress in Furnace Refractories

    By John D. Sullivan

    A DISCUSSION of the developments of the past decade in the field of refractories, and the effect of these developments on the performance and life of open-hearth furnaces, is perhaps best introduced b

    Jan 1, 1936

  • CIM
    The Aurora Super Pump – Part II: Field Performance of a New Hydrotransport Pump

    By D. Wolfe, R. Cleminson

    "The Aurora North mine has been operating for more than ten years, and is the source of over half of Syncrude’s bitumen production. The hydrotransport systems at Aurora experience high rates of wear,

    Jan 1, 2014

  • SME
    Impacts Of Ground Convergence On TBM Performance In Ghomroud Tunnel

    By Ebrahim Farrokh

    Ghomroud water conveyance tunnel project is under construction using shield Tunnel Boring Machines (TBM) for a total length in excess of 50 km. Phase 1 of the project included 36 km of tunnel divided

  • DFI
    EFFC/DFI Best Practice Guide to Tremie Concrete for Deep Foundations, Edition 1

    By EFFC/DFI Concrete Task Group

    Concrete technology continues to advance rapidly and modern mixes with five components – cement, additions, aggregates, (chemical) admixtures and water – often have characteristics which differ signif

    Jan 1, 2016

  • NIOSH
    Mineral Indicators - Aluminum (fba062f0-b758-4019-a907-98a7ea196baa)

    Since mid-July, most domestic producers have been marketing 99.5 percent unalloyed aluminum ingot at 53-57 cents per pound. Dealers in the United States have recently quoted ingot at 52.3-52.8 cents.

    Jan 1, 1978

  • CIM
    Canadian Clean Power Coalition Project: The evaluation of options for CO2 extraction from existing and new coal-fired power plants

    By D. du Plessis, R. Stobbs

    The Canadian Clean Power Coalition (CCPC) was created in 2001 to protect and enhance Canada’s vast coal and other carbon-based resource wealth, and to ensure that environmental public policy decisions

    Jan 1, 2006

  • SAIMM
    New Opportunities - Exhaustive Monitored Copper Coolers For Submerged Arc Furnaces

    By M. Hopf, E. Rossouw

    Keywords: Pyrometallurgy, furnace, copper coolers, freeze lining, monitoring, Saveway The use of water-cooled copper components as sidewall elements of submerged arc furnaces and other pyrometallu

    Jan 1, 2006

  • NIOSH
    OFR-27-72 The Miner, His Job And His Environment: A Review And Bibliography Of Selected Recent Research On Human Performance ? Executives? Summary

    By Charles Fried

    The Coal Mine Health and Safety Act passed by Congress in 1969, called for research to alleviate the occupational stresses and hazards of coal miners. Spurred by a series of recent mine disasters the

    Jan 1, 1972

  • IIMP
    Las plantas de beneficio del Banco Minero del Perú

    By Hernando Labarthe

    "El siguiente texto describe la importancia de la actividad del Banco Minero en el Perú, a través de la instalación y operación de sus plantas de beneficios, como las ventajas, las instalaciones, orga

    Jul 20, 1956

  • NIOSH
    RI 4882 Volumetric Determination of Small Quantities of Uranium - With Special Reference to Errors Associated with Use of Jones Reductor (2b4914c2-e697-47ab-9da8-dccd8a6cadf8)

    By Heber E. Peterson, Sill. Claude W.

    "INTRODUCTION In the usual volumetric determination of uranium, the solution containing uranium is reduced in a Jones reductor, yielding a mixture of trivalent and tetravalent uranium; the trivalent u

    Jun 1, 1952

  • SME
    Design of Large and Shallow Caverns of New York Second Avenue Subway

    By Verya Nasri

    The proposed Second Avenue Subway Project in New York City is approximately 8.5 miles long, up to a depth of 120 feet beneath grade and runs the length of the eastern side of the island of Manhattan f

    Jan 1, 2008

  • TMS
    Preparation of Potassium Ferrate by Hypochlorite Oxidation Method

    By Guomin Jiang

    Potassium ferrate is an excellent multifunctional reagent for wastewater treatment, but its preparation is crucial. The improved hypochlorite oxidation method was used to prepare potassium ferrate in

    Jan 1, 2010

  • NIOSH
    Introduction (f021bf21-e10f-41e4-9b75-c54b8612d619)

    Research 83 highlights significant studies conducted during the past fiscal year at Bureau facilities and offices. Readers who want more information about the projects and studies summarized here can

    Jan 1, 1983

  • NIOSH
    Bulletin 129 The Fusibility of Coal Ash and The Determination of the Softening Temperature

    By ALBERT E. HALL, Arno C. Fieldner, Alexander L. Field

    As a safeguard against excessive clinker troubles, specifications for the purchase of coal can be drawn to include the "softening" or "fusing" temperature of the ash. The value of such information has

    Jan 1, 1918

  • NIOSH
    IC 7328 Hazards Of The Trolley-Locomotive Haulage System In Coal Mines ? Introduction

    By D. Harrington

    The greatly extended use of the underground trolley-locomotive system for hauling coal without doubt was one of the most important factors in the rapid progress of coal mining and the increased produc

    Jan 1, 1945