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  • SME
    Performance Of A Soft Ground Tunnel On The Washington Metro

    By Edward J. Cording, William H. Hansmire

    INTRODUCTION The Washington Metro, a rapid transit system that will serve the District of Columbia, Virginia, and Maryland, has been under construction for about two years. Construction of the Metr

    Jan 1, 1997

  • NIOSH
    IC 7944 Exploratory Drilling Practices And Costs At Western Uranium Deposits ? Introduction

    By D. E. Redmon

    Exploration of hidden mineral deposits becomes increasingly important as known ore reserves are depleted. The primary objective in any exploratory program is to obtain enough reliable information to e

    Jan 1, 1960

  • CIM
    The Noranda Smelter

    By W. B. Boggs

    The Noranda smelter was built by Noranda Mines, Limited, from the designs of A. E. Wheeler, consulting metallurgist, New York, for the reduction of ores and concentrates from the Horne mine, and to tr

    Jan 1, 1930

  • IIMP
    OptimalSlope: a software determining optimal pitwall shapes of maximum Overall Slope Angles leading to increased financial returns and reduced mining carbon footprint

    By Stefano Utili, Robert Pell, Nelson Morales, Cristobal Valderrama, Andrea Agosti, Guillermo Albornoz

    The overall slope angle (OSA) of pit walls plays a crucial role in the financial return of open pit mines. The work showcases a novel design methodology where non-planar geotechnically optimal pit wal

    Sep 30, 2022

  • CIM
    A Study of Polynary Uranium Mo-Zr-Nb-V Alloys

    "In a continuing investigation into the development of uranium alloys for armament applications, some complex base alloy corn positions were modified by varying the amount of alloying elements and by

    Jan 1, 1968

  • AUSIMM
    Microbes and their Metabolites - Potential Iron Ore Flotation Reagents

    By R Dwyer, S Rea, W J. Bruckard, N McSweeney, R Holmes

    "The innate ability of microorganisms to adapt to changing or inhospitable environments has often been exploited for industrial purposes and forms the basis of many current biotechnological processes.

    Aug 12, 2013

  • CIM
    High Temperature PDX of Precious/Base Metal Concentrates from Newmont's Phoenix Project, Using Controlled Precipitation of Sulphate Species to Enhance Silver Recovery

    By J. C. Gathje

    Newmont acquired the Phoenix Project through the acquisition of Battle Mountain Gold in 2000. Shortly after the acquisition, Newmont Metallurgical Services (NMS) and Nevada Operations began developmen

    Jan 1, 2004

  • NIOSH
    RI 6950 Thermodynamic Properties Of A Van Der Waals Fluid In The Two-Phase Region

    By Robert E. Barieau

    General expressions for evaluating various thermodynamic properties applicable to the van der Waals equation of state have been derived. These formulas were subsequently used to evaluate various therm

    Jan 1, 1967

  • NIOSH
    RI 6677 Freezeproofing Lignite

    By Robert C. Ellman

    The Bureau of Mines investigated the factors that cause agglomeration of lignite by freezing during winter shipment and sought methods to avoid it. Tests showed that lignite may be freezeproofed by re

    Jan 1, 1965

  • NIOSH
    RI 4276 Investigation Of Meta-Anthracite In Newport And Providence Counties, R. I.; Petrography, Chemical Characteristics, And Geology Of Deposits

    By Albert L. Toenges

    The fuel requirements for industrial and domestic consumers in New England, in normal times, are supplied almost entirely by fuel oil, anthracite, and bituminous coal. A shortage of these fuels occurr

    Jan 1, 1948

  • SME
    Study on the effects of scrubber operation on the face ventilation

    For the past four years, the Department of Mining Engineering at the University of Kentucky has conducted a validation study of the CFD Fluent code, by comparing its results against mining-related ben

    Jan 1, 2009

  • AIME
    The Behavior Of Calcium Sulphate At Elevated Temperatures With Some Fluxes

    By H. 0. HOFMAN AND W. MOSTOWITSCH

    I. INTRODUCTION. THE mineral gypsum, CaSO, + 2 H2O, has been used for many years as a sulphurizing and basic flux in several smelting¬operations. Thus, in smelting oxide nickel-ore in the blast furna

    Jan 1, 1909

  • CIM
    Variable speed SAG milling

    By M. N. Brodie

    "The ability to adjust the speed of a SAG mill offers benefits to the process and to equipment maintenance. It can be provided with some slight effect on availability ranging from somewhat enhanced to

    Jan 1, 2003

  • SME
    Optimal Grade Control Using Geostatistics And Economics: Methodology And Examples (0cbcdec1-207d-4fc8-8d49-cd716d6fcdc7)

    An important problem in mine operations is the classification of material as waste, low-grade stockpile, and ore. This classification must often be made with blasthole data that are widely spaced and

    Jan 1, 1999

  • SME
    Creep Along Weak Planes In Roof And How It Affects Stability

    By M. K. Larson, R. G. Wade

    Researchers at the National Institute for Occupational Safety and Health (NIOSH) are studying the time-dependent response of rock stressed along weakness planes. The objective is to improve mine safe

    Jan 1, 2000

  • AUSIMM
    New Zealand Gold Mining: Past, Present and Future Trends

    By D J. Holden

    Prospectivity, the relative value of gold, investor confidence, general economic stability and legislation driven by public attitudes are seen as the major influences on the gold mining industry in Ne

    Jan 1, 1992

  • CIM
    Waste Management and Energy Savings through Extraction of Valuable Metals: Copper, Nickel and Cobalt from Sulphidic Tailings of Golgohar Iron Mine, Iran

    By M. Askari, A. Ahmadi

    "This study was conducted to establish the possible application of bioleaching in the pilot scale to recover valuable metals from the sulfidic tailings of Golgohar Iron Mine (Kerman, Iran). Using biol

    Jan 1, 2017

  • AIME
    Rare Metals and Minerals ? Many New Uses ? Big Rise in Output of Beryllium, Calcium, Molybdenum, Radium ? Tungsten Scarce

    By Frank L. Hess

    BERYLLIUM is demanding more of the limelight, and the output of beryllium copper (containing 2% to~ 3 per cent of beryllium) seems to have grown 60 per cent above that of 1936, which was double that o

    Jan 1, 1938

  • SAIMM
    The Truths And Myths Of Freeze Lining Technology For Submerged Arc Furnaces

    By P. L. Duncanson, J. D. Toth

    Since 1995, when "freeze lining" refractory systems were introduced to the ferroalloy industry, they have gained in popularity, due to the freeze lining?s reputation for reliability, safety, and the c

    Jan 1, 2004

  • SME-ICGCM
    A Retrospective Assessment of Longwall Roof Support with a Focus on Challenging Accepted Roof Support Concepts and Design Premises

    By Thomas M. Barczak

    The era of the shield-supported longwall face began in the United States a little over 25 years ago. The most fundamental development of the shield in the past 25 years has been an increase in size a

    Jan 1, 2006