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  • SME
    New Tunneling Innovations Revolve Around More Efficient Disc Cutters

    By Desiree Willis

    Disc cutters have determined excavation rates of rock tunneling projects for more than 50 years. First developed in 1956 by James S. Robbins, disc cutters (then 279 mm or 11 in. in diameter) were use

    Jan 1, 2007

  • SME
    Developing Trees Tolerant to Degraded Mine Soils in an Underground Greenhouse Mining, Metallurgy and Exploration

    By Michael Kukay, Paul Conrad, Cosmas Opoku-Ware

    This project is exploring the potential for developing trees tolerable to degraded un-reclaimed mine site soils and tailings as a solution to re-establishing long-term tree growth on those sites. The

  • SME
    Doing It All: Cut, Crush, And Load With One Machine Wirtgen Surface Miner

    By D. van der Veen

    Mining companies and contractors are looking at Wirtgen Surface Miners to provide flexibility at their operations. Wirtgen Surface Miners have been used in the surface mining industry for over fifteen

    Jan 1, 2002

  • SME
    New Opportunities and Challenges in Surveying Underground Cavities Using Photogrammetric Methods

    The exploitation of the underground is currently undergoing a major transformation process. Besides mining, alternative ways of utilization are playing an increasingly important role. These alternativ

    Jan 7, 2020

  • SME
    Phosphogypsum Uses

    By P. R. Clifford

    Phosphogypsum is a byproduct of the manufacture phosphoric acid. There are approximately one billion tons of phosphogypsum stored in stacks in northern and central Florida. The Florida Institute of

    Jan 1, 2002

  • SME
    Permitting New Tunnels in Southern Ontario, Canada—Panacea, Pragmatism, and Professionalism

    By Adrian Coombs, Paul Magowan, Derek Zoldy

    Continued development and intensification are fuelling the urgent need for new trunk infrastructure within The Regional Municipality of York and throughout the Greater Toronto Area. Permitting of thes

    Jan 1, 2007

  • SME
    The Price Is Right?Planning Large Water Tunnel Contracts In New York

    By Christian Maguire

    Tunnel contracts in New York have in recent years had few bidders with the bids received being much higher than anticipated. Since 9/11, security has become a key issue in planning key infrastructure

  • SME
    Verification and calibration of ventilation network models

    By F. F. von Glehn

    There is no doubt that simulated ventilation networks must be adequately verified before they can be extrapolated and used for predictive purposes. There are two general approaches as to how the verif

    Jan 1, 2009

  • SME
    Newcrest Mining: An Independent Gold Miner On The Move In Australia

    Newcrest Mining is one of the leading independent gold producers in Australia thanks in large part to its Cadia Valley operations. It is the largest gold and copper producer in New South Wales and one

    Jan 1, 2008

  • SME
    Promising Options for Solving the Dolomite Problem of the Florida Phosphate Resources—a Brief Review Mining, Metallurgy and Exploration

    By Dapeng Zhang, Brij Moudgil, Shibo Zheng, Chunhui Feng, Wenyi Song, Wending Xiao, Patrick Zhang

    Separation of dolomite from phosphate is the most challenging problem in phosphate mineral processing. Over 50% of the future phosphate reserve in Florida contains too much dolomite to process using t

  • SME
    Assessment Of A Selectivity Criterion For Upgrading Ultrafine Iron Ores By Selective Flocculation

    By A. A. El-Midany

    Traditionally, the choice amongst different upgrading techniques or in finding the optimum operating conditions for a given upgrading technology depends on whether one is looking at the grade or the r

    Jan 1, 2008

  • SME
    Beach sand mining and its separation in Oscom, Orissa (India)

    By K. N. Panigrahi

    India bestowed with 6000km of the coastal belt, contains some of the richest and largest placer deposits with a mixture of heavy minerals like ilmenite, rutile, leucoxene, zircon, monazite, sillimanit

    Jan 1, 2005

  • SME
    Hydrothermal Silicification and Alteration of Breccias from Lucky Strike and Menez Gwen hydrothermal fields (Mid-Atlantic Ridge, Azores)

    By I. A. Costa, Y. Fouquet, F. Barriga

    "Lucky Strike and Menez Gwen are two hydrothermally active sites located along the border of the Azorean plateau, southwest of the Azores islands where the alteration processes affecting basaltic rock

    Sep 1, 2014

  • SME
    Record Production Of Industrial Rocks And Minerals In Utah

    By B. Tripp

    Utah produces a wide variety of industrial rock and mineral commodities, valued in 2005 at a record $758 million (21 percent of the total non-fuel mineral production of Utah). Major commodities produ

    Jan 1, 2007

  • SME
    Numerical Analysis of a Rock Bolt Load Indicator Washer Neglecting the Stress Relaxation Effect Mining, Metallurgy and Exploration (1651f380-7da4-4089-a8ef-ce53aa560d38)

    By Eugie Kabwe

    Rock bolts are components of tunnel support structures and their efficacy in reinforcement requires the appropriate estimation of the bolt pre-tension. However, cases of ineffective rock bolt applicat

  • SME
    Precious Metal Deposits Related to Alkaline Igneous Rocks – A Space-Time Trip Through the Cordillera

    By Felix E. Mutschler

    Alkaline rock-related precious metal deposits include: • orthomagmatic platinum group elements (PGE) ± gold (Au); • porphyry copper-silver-gold (Cu-Ag-Au, ±PGE); • epithermal Au-only, and Au-Ag-bas

    Jan 1, 1991

  • SME
    Reclaiming Steep-Slope Eastern Coal Mines For Successful Reforestation

    A methodology has been developed and demonstrated to be effective in reclaiming surface-mined land for a forestry post-mining land use. The Forestry Reclamation Approach (FRA) has been applied, almos

    Jan 1, 2011

  • SME
    A Review Of The Analysis Of Amphibole Fibers

    By K. A. Allison, D. R. Van Orden, R. J. Lee

    Continuing analysis of environmental samples for asbestos content has resulted in the misidentification of non-asbestos amphibole particles as asbestos fibers. These errors have received wide publici

    Jan 1, 2005

  • SME
    In-Mine Evaluation Of Smart Mine Fire Sensor (e0413569-6dc4-41a0-bd26-5c60fdfe0934)

    By R. A. Franks

    An evaluation of a nuisance-emissions-discriminating smart mine fire sensor system was made in an operating coal mine. These field evaluations were conducted to determine the sensor system?s ability

    Jan 1, 2008

  • SME
    Maintenance Contract on Cat 785 Trucks Works Well at Round Mountain

    By J. B. Rasmussen

    As part of a purchase of a fleet of Caterpillar 785 trucks, Round Mountain Gold Corp., Cashman Equipment Co. and Caterpillar Inc. entered into a four-year contract for the major maintenance of the fle

    Jan 1, 1991