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  • SME
    Mechanical Fabric and In-Situ Stress Orientations in the Devonian Gas Shales of the Appalachian Basin

    By William J. Gregg

    Mechanical testing results on oriented Devonian gas shale core throughout the Appalachian basin show a preferred fracture direction perpendicular to bedding. The preferred direction is generally paral

    Jan 1, 1986

  • SME
    Discrete Element Modeling In Mineral Processing

    By Barada K. Mishra

    The potential merit of the discrete element method (DEM) as a numerical tool for analyzing process engineering problems involving particulate material is discussed. In this method, the dynamic equilib

    Jan 1, 1993

  • SME
    Dynamic Subsidence Basin

    By W. M. Ma, Daniel W. H. Su, K. Centofanti, Yi Luo, W. L. Zhong, Syd S. Peng

    3.1 INTRODUCTION The final subsidence basin discussed so far is that developed long after mining has stopped. In a supercritical final subsidence basin, the central portion subsides uniformly. Thus

    Jan 1, 1992

  • SME
    Grinding Circuit Control Philosophy

    By E. F. ‘Pat’ Nelson, Richard Broom

    Our portion of this afternoon’s session is dedicated to the operation of automatic process control associated with small to medium size primary or SAG milling circuits. In recognition of the subjec

    Jan 1, 1984

  • SME
    Specifying and Acquiring Longwall Shield Supports

    By John Matthews

    During 1982 and 1983, it became increasingly clear that North River No. 1 Mine would have to buy a set of replacement longwall shields. Despite extensive efforts to make improvements, the shields that

    Jan 1, 1986

  • SME
    Influence Of Copper Ions Addition On Fine Coal Filter Cake Parameters

    By S. M. Khandrika

    It is shown that dewatering of fine coal particles (D50 : 21 microns) is enhanced near the point of zero charge. The coal surface is modified by the addition of copper ions and adjusting pH to precipi

    Jan 1, 1993

  • SME
    Recovery Of High-Purity Arsenic Trioxide From Arsenopyrite

    By Jerome P. Downey

    Treatment of tungsten ore at Anschutz Mining Company's Chicote Grande (Bolivia) operation results in a relatively high grade arsenopyrite byproduct stream. Laboratory and miniplant testwork have

    Jan 1, 1985

  • SME
    Characterization Of Freshly Generated Airborne Quartz Dust

    By R. Hogg, M. Polat, S. Chander

    A fresh dust generator was designed and built in order to study the agglomeration behavior and other characteristics of freshly generated airborne dust. The size distribution of the freshly generated

    Jan 1, 1991

  • SME
    2016 MPD Student Poster Contest Reviewed Abstracts Mineral & Metallurgical Processing Division Society for Mining, Metallurgy & Exploration Inc. February 24, 2016, Phoenix, AZ. Foreword by Ren Bryce

    "The seventh annual Mineral & Metallurgical Processing Division (MPD) student poster contest was held last February at the SME Annual Conference & Expo in Phoenix, AZ. A total of 21 students entered t

    Jan 1, 2016

  • SME
    Liberation modeling and parameter estimation for multicomponent mineral systems

    By R. K. Mehta, G. T. Adel

    A review of the literature reveals that methods for simulating the coupled behavior of size reduction and liberation are limited to binary mineral systems containing one composite particle class. The

    Jan 1, 1991

  • SME
    Chemical Oxygen In Underground Life Support

    By J. W. Mausteller

    Chemical oxygen supplies have been used for nearly 60 years, with their greatest application during the last 25 years. They are of two types, the superoxides and chlorate "candles", The superoxides ar

    Jan 1, 1971

  • SME
    Porgera - Discovery of the Porgera Deposit, Papua New Guinea

    By Neil Hillhouse

    The Porgera gold district, like many other large gold deposits, has a long history of awareness, but only in the last five years has a geologic understanding of the district permitted the discovery of

    Jan 1, 1990

  • SME
    A Fault-Diagnostic Expert System For Longwall - Shearer

    By Sukumar Bandopadhyay

    A present dominant problem is that of high downtime of the longwall shearer used in the coal production process. The means by which this problem can be overcome are many, but one of, the most importan

    Jan 1, 1989

  • SME
    The Work-Crew Performance Model: A Method For Defining And Building Upon The Expertise Within An Experienced Work Force (ad926623-dd0b-4ffd-9afd-e3ffd1095fbc)

    By G. T. Lineberry, W. J. Wiehagen, L. L. Rethi

    This paper discusses a practical method for enhancing the performance of mining work crews. The method, described as the Work Crew Performance Model (WCPM), seeks to define performance variability wit

    Jan 1, 1996

  • SME
    Flotation Of Some Silicates

    By Geoffrey Purcell

    The flotation response to amine collector of quartz and the feldspars microcline and albite, of the pyroxenes augite and spodumene, and of olivine can be, explained by a physical adsorption model. Flo

    Jan 1, 1966

  • SME
    Incremental Analysis

    Cost accounting information is used primarily for (1) planning, control, and performance evaluation; and (2) managerial decision-making. Incremental analysis is a tool for managerial decision-making.

    Jan 1, 1999

  • SME
    Rock Engineering For Surface Gold Mines

    By D. S. Cavers

    INTRODUCTION This paper discusses aspects of rock engineering applicable to surface gold mines. Discussion particularly centers on areas in which rock mechanics can enhance the mine productivity o

    Jan 1, 1987

  • SME
    Tripoli (40fb3fe2-f36f-46d8-a1ad-63663d7fda0f)

    By Charles T. Steuart, Richard B. Berg

    Tripoli and the related mineral commodities such as micro- crystalline silica have been mined for more than 100 years for their abrasive properties. Although abrasive and buffing compound markets are

    Jan 1, 1994

  • SME
    Kinetic Testing 1. Effects of Protocol Variable on Rates of Weathering

    By Bern Klein, Richard W. Lawrence, Scott Frostad

    A laboratory study was conducted to evaluate the effects of various kinetic test protocols on sulfate production, NP depletion and time to acidity. Six test protocols were evaluated including standard

    Jan 1, 2000

  • SME
    Kyrgyzstan Adopts New Mining Code

    By Scott Horton

    In no Confederation of Independent States (CIS) country does the mining sector play quite so commanding a role as in the mountainous Central Asian republic of Kyrgyzstan. Its president, Askar Akayev,

    Jan 1, 1998