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  • SME
    Designing And Managing Unpaved Opencast Mine Haul Roads For Optimum Performance (SME Annual Meeting March 1-3, 1999, Denver, Colorado)

    By A. T. Visser

    The expansion of surface mining has led to the development of very large off-highway trucks currently capable of hauling payloads in excess of 290t. Mine haul roads have historically been designed emp

    Jan 1, 1999

  • SME
    GERT Models For The Development Of Open-Pit Gold Mines In Saudi Arabia

    By M. H. Al-Dabbagh

    In this paper, the authors outline the deficiencies of PERT/CPM as a method for scheduling complex projects such as mine development. In particular, PERT/CPM networks cannot accommodate logical nodes

    Jan 1, 2002

  • SME
    Novel Flotation Technology - A Survey of Equipment and Processes

    By Kenneth J. Miller

    Froth flotation is one of the most actively pursued research and development areas in the coal preparation industry today. Many new types of flotation machines and processes are being developed and co

    Jan 1, 1988

  • SME
    Analysis Of Truck Dispatching Strategies Forsurface Mining Operations Using SIMAN

    By B. Kolonja

    A SIMAN and CINEMA PC-based simulation model was developed to simulate and animate the truck-shovel operations of surface mines. The model is capable of simulating one mathematical dispatching strateg

    Jan 1, 1993

  • SME
    Methods And Trends In Protecting The Historical Chambers In Wieliczka Monumental Salt Mine

    By R. Debkowski

    Mining methods used to protect the workings in underground salt mines against the destructive activity of natural factors are presented in this paper. Major hazards and methods of elimination of their

    Jan 1, 2006

  • SME
    The Relationship Of Roof Movement And Strata-Induced Microseismic Emissions To Roof Falls (43602871-ab04-4ff3-95cd-95d1c33374f0)

    By J. Litsenberger, T. E. Marshall, P. R. Coyle, L. J. Prosser, A. T. Iannacchione

    For the first time in an underground stone mine, the relationship between roof movement and microseismic emissions was examined in conjunction with two distinct roof fall areas. As roof monitoring inc

    Jan 1, 2004

  • SME
    In situ leaching of disseminated gold deposits - geological factors

    By J. G. Wargo

    In situ leaching of disseminate gold deposits has been studied from a theoretical perspective to outline the operating environment for the process. Rock permeability and the relationship of permeabili

    Jan 1, 1987

  • SME
    Inelastic Deformations of Fault and Shear Zones in Granitic Rock

    By D. C. Wilder

    Deformations during heating and cooling of three drifts in granitic rock were influenced by the presence of faults and shear zones. Thermal deformations were significantly larger in sheared and faulte

    Jan 1, 1986

  • SME
    Development of Non-Destructive Inspection Method for Concrete Elements in Tunnel Linings Using Remote Laser Sensing

    By Yoshinori Shimada, Oleg Kotiaev, Hiroaki Sakamoto, Toshihiro Asakura, Naotoshi Yasuda, Norikazu Misaki, Masahiro Shinoda

    "To ensure that trains run safely, the performance of railway civil engineering structures is checked by periodic inspections. General inspection method has merits and demerits, but none of them offer

    Jan 1, 2016

  • SME
    Detection And Characterization Of Nanoparticles In Respirable Coal Mine Dust - SME Annual Meeting 2022

    By F. Sime, X. Wang, J. D. Miller, T. Akinseye, S. Assemi, L. Pan

    Respirable coal mine dust (RCMD) is a complex mixture of carbonaceous and mineral particles with a variation in size and shape. Accumulation of RCMD in the lungs of underground coal miners results in

    Mar 2, 2022

  • SME
    Benefits and Costs of Environmental Compliance: A Survey

    By Bonn J. Macy, David A. Gulley, William A. Vogely

    INTRODUCTION Some of the most famous and graphic environmental incidents have arisen from mineral extraction, including oil spills, the Reserve Mining asbestos tailings case, Kaiparowitts surface

    Jan 1, 1985

  • SME
    A Comparison Of Analytical Models For Diffusional Deposition Of Radon Daughters In A Human Ling Bifurcation

    By Antoon W. van der Vooren, Colin R. Phillips

    A comparison of analytical models used to describe deposition in the first generation of lung bifurcations is presented. In order to allow testing of the mathematical models, experimental data were ob

    Jan 1, 1981

  • SME
    PC-Based Worker-Scheduling System For Underground Mines

    By S. O. Yuan, R. L. Grayson

    As a followup to a USBM-sponsored research project, the authors utilized the knowledge-base structure and system concepts from a Sun Sparcstation-based worker-scheduling system of the mine-management

    Jan 1, 1998

  • SME
    Use Of An Analytical Solution For Preliminary Estimates Of Ground Water Inflow To A Pit

    By L. C. Atkinson, E. A. Azrag, T. M. Hanna

    The results of using a simple analytical solution and a relatively complex numerical model to estimate ground water inflow to an open pit mine are compared. The analytical solution assumes lateral, ra

    Jan 1, 1995

  • SME
    On-Line Data Reconciliation By Minimization Of A Weighted Sum Of Squared Residuals And Node Imbalances

    By Daniel Hodouin, Claude Bazin, Sami Makni

    A method is proposed to perform on-line data adjustment and inference of unmeasured variables, using measured flowrates and on-stream assays in mineral processing plants. The algorithm minimizes a wei

    Jan 1, 1995

  • SME
    Modified version of the Geomechanics Classification for entry design in underground coal mines

    By Z. T. Bieniawski, D. A. Newman

    The Geomechanics Classijication (RMR System) (Bieniawski, 1979) was modified for entry and roof support design in underground coal mines. Adjustment multipliers were introduced to incorporate the infl

    Jan 1, 1987

  • SME
    Kinetics of cathodic decomposition of pyrrhotite and chalcopyrite in deoxygenated solutions

    By I. Iwasaki, K. A. Smith, X. Cheng

    A cathodic decomposition model was examined for both pyrrhotite and chalcopyrite in an attempt to analyze the formation of surface coatings in deoxygenated solutions at natural, near neutral pH. Combi

    Jan 1, 1999

  • SME
    Evaluation Of A Mine Panel Failure Using The Local Mine Stiffness Criterion - A Case Study

    By K. Morsy, S. S. Peng

    A new method of pillar stability evaluation was proposed. The unique feature about the method is that it estimates two types of stability factors for the pillar. The first stability factor is to measu

    Jan 1, 2003

  • SME
    Determining The Effect Of Physico-Chemical Parameters On Floc Size Using A Population Balance Model

    By S. K. Sharma, D. A. Stanley

    The US Bureau of Mines is investigating the fundamentals of the flocculation process. The objective of this study was to determine the effects of various physico-chemical parameters, namely, shear rat

    Jan 1, 1995

  • SME
    Decrepitation Of Calcined Abrasive Grade Bauxite, Moengo, Suriname

    By S. C. Libby

    The amount of fine material (minus 60 Tyler mesh) generated during calcination and/or handling of calcined abrasive grade bauxite from Alcoa's operations at Moengo, Suriname, has recently increas

    Jan 1, 1980