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  • SME
    The Treatment Of Refractory Gold Ores Containing Carbonaceous Material And Sulfides

    By W. J. Guay

    Carbonaceous gold ores containing gold dispersed in sulfides are refractory to cyanidation because: (1 ) the carbonaceous materials adsorb gold during cyanidation; (2) a portion of the gold s so finel

    Jan 1, 1981

  • SME
    Manhattan Mine: Linking Reclamation and Sustainable Development

    By Mark Ioli, Debra Struhsacker

    In September 2004, Gale Norton, U.S. Secretary of the Interior, presented the Manhattan Mine with a U.S. Bureau of Land Management’s 2004 Hardrock Mineral Environmental Award. The Manhattan Mine is a

    Jan 1, 2005

  • SME
    The Atlanta West Area CSO Storage Tunnel and Pumping Station Project—15 Months of Design Accomplished Within 10 Months

    By Refik Elibay, Lawrence A. Williamson, George D. Barnes

    Under an extremely aggressive schedule, final design of 13.5 km (8.4 miles) miles of 8.2 m (27 ft) diameter deep rock tunnel, 322 ML/day (85 million gallons / day)submersible pumping station and assoc

    Jan 1, 2005

  • SME
    A Dissolution Kinetic Model For Metal Powders A Case Of Varying Surface Area

    By Kenneth N. Han, Peter Nam-soo Kim

    A kinetic model for leaching of particulate metals in a batch system has been developed. The leaching mechanism has been analyzed by solving a series of ordinary differential equations relating hetero

    Jan 1, 2005

  • SME
    Unparalleled Miner Training For The 21st Century

    By D. H. McCain

    Through a unique partnership between the Colorado Mine Safety and Training Program (CMSTP), the Colorado Rock Products Association (CRPA) and the Higher Education and Advanced Technology (HEAT) Center

    Jan 1, 2001

  • SME
    Evaluation Of Ct-Based Coal Washability Analysis System Under Simulated On-Line Conditions

    By J. D. Miller, C. L. Lin

    Appropriate software and hardware necessary to adapt a x-ray CT analyzer for determination of coal washability has recently been developed and sucessfully tested for well characterized samples under l

    Jan 1, 2001

  • SME
    Signal Processing With Wavelet Transform For In-Seam Seismic Based Mine Void Detection Technique

    By M. Ge

    Signal processing is a major challenge for In-Seam Seismic (ISS) technique. Fourier Transform is an important tool for signal processing such as frequency analysis. However, for ISS signal, localized

    Jan 1, 2007

  • SME
    The Mineral Nature Of Asbestos

    By Malcolm Ross

    Fibrous minerals are common in nature but asbestiform minerals are rare. The unique mineralogical characteristic common to all the asbestos minerals is their morphologic form (or habit of crystallizat

    Jan 1, 2007

  • SME
    Assessment Of The Pathogenic Potential Of Asbestiform Vs. Nonasbestiform Particulates (Cleavage Fragments) In In Vitro (Cell Or Organ Culture) Models And Bioassays

    By Brooke T. Mossman

    Asbestos fibers are highly fibrous silicate fibers that are distinguished by having a large aspect (length to diameter) ratio and are crystallized in an asbestiform habit that causes them to separate

    Jan 1, 2007

  • SME
    Reduction Of Gold Inventory In Cyanide Heap Leaching

    By Thom Seal, S. J. Jung

    This paper will combine three SME annual meeting presentations on reducing gold inventory in cyanide heap leaching. Information on Part I – Side slope leaching (SME 2003), Part II – Determining the d

    Jan 1, 2005

  • SME
    Jabali / Yanbu – A New Source Of Zinc In The Middle East (fe9d2734-cc3c-4ef2-b8ec-54ed953ef19a)

    By K. M. Stone, N. J. G. Masson, A. C. Woollett

    The Jabali zinc deposit, in Yemen, contains at least 9.4 Mt at a grade of 10.7% zinc, 2.2% lead and 77g/t silver. The zinc occurs as smithsonite with minor hydrozincite. The Jabali ore does not produc

    Jan 1, 2002

  • SME
    Political-Risk Management in the Northern Andean Countries

    By W. J. Spat

    Political risk is an integral part of the mining business in northern Andean countries. Peru, Ecuador, Colombia and Venezuela all have a higher than average political risk compared with other South A

    Jan 1, 2000

  • SME
    Innovative Retaining Wall with Jet Grout for New Metro Tunnel Underneath Amsterdam Central Station

    By B. J. Schat, A. W. O. Bots, O. S. Langhorst

    Amsterdam City Council is building a new metro line, the North–South Line. The line passes under Amsterdam Central Station (a listed building) about 18m below street level. The retaining wall that has

    Jan 1, 2007

  • SME
    Promoting Cooperation Between Small- and Large-Scale Miners in Ghana

    By C. Anim-Sackey, R. K. Amankwah

    Some large-scale mining companies in Ghana have adopted proactive management strategies in dealing with small-scale (galamsey) miners who have encroached on their concessions. This has been mainly ac

    Jan 1, 2004

  • SME
    Application Of Tunnel Boring Machines To Coal Mine Entry Development

    By Thomas J. Crocker, Douglas B. Uthus

    Tunnel Boring Machines (TBM) have gained worldwide acceptance in the construction field and are being employed in ever increasing numbers to drive underground transit lines, drainage systems, etc. How

    Jan 1, 1976

  • SME
    Extraction Metallurgy Of Copper From Chalcopyrite Concentrates Without Sulfuric Acid Generation Via Chlorination III. Integration Of Gaseous Chlorination And Selective Oxidation

    By T. Tamagawa, N. S. Fu, I. Iwasaki, M. Kobayashi

    A 3-stage fluidizing bed process of chlorination, selective oxidation and sulfur chloride conversion was tested for processing of a chalcopyrite concentrate. It was found that the use of excess oxygen

    Jan 1, 2000

  • SME
    Wyoming’s Powder River Basin – Geology and Geography of the Nation’s Largest Coal Field

    By Gary B. Glass

    Seventeen percent of US coal production now comes from the 19 surface coal mines in the Powder River Basin of northeastern Wyoming. The Powder River Coalfield, which coincides with this topographic an

    Jan 1, 1994

  • SME
    Role Of Gas Pressure In Underground Coal Mine Bursts And Bump

    Face and pillar bursts, bumps and bounces are violent failures that occur in underground coal mines in response to a complicated interplay of face and pillar geometry, seam depth, coal properties and

    Feb 27, 2013

  • SME
    Steel Fiber Microsilica Shotcrete With Remote Controlled Equipment

    By Galyn Rippentropp, Finn Erik Overlie

    INTRODUCTION The wet shotcreting system utilizing steelfiber microsilica shotcrete with remote controlled equipment (The Robocon System) was developed in Norway 7-8 years ago. Norway was the natura

    Jan 1, 1987

  • SME
    The Lithium Industry - Challenges For The Future - Introduction

    By I. A. Kunasz

    This paper is not intended to review and re-state general information on lithium, but rather to analyze the paradigm that has caused such a rapid rise in lithium production and the development of new

    Jan 1, 2011