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  • AUSIMM
    Undercutting to Surface Breakthrough – Cadia East Panel Cave (Stage 1)

    By B Mobilio, M Secheny, J Rachocki, G B. Sharrock, A Jäger, J L. Lett, I Brunton, G W. Capes

    Establishment of the Cadia East Panel Cave Stage One (PC1S1) commenced with the firing of the first bell in early 2011. Production began with the completion of the undercut in May 2014. PC1S1 used a p

    May 9, 2016

  • AUSIMM
    Implementation of a Surface-based Hydraulic Fracturing Program to Successfully Propagate a Large Cave through Hard, Competent Near-surface Rock Masses to Achieve Breakthrough

    By L Olivier, R J. Lowther, J L. Lett, I Brunton

    Hydraulic fracturing to precondition the orebody to enhance rock mass cavability is gaining acceptance in underground cave mining applications. Assisting cavability is becoming important as an increas

    May 9, 2016

  • SME
    Annual Review 2015 Mining Review

    By J. A. Ober

    "In 2015, the estimated value of nonfuel mineral production in the United States decreased by 3 percent from that in 2014 (Table 1), mainly as a result of decreased metal and metallic mineral prices,

    May 1, 2016

  • SME
    Applications of point cloud technology in geomechanical characterization, analysis and predictive modeling

    By J. Kemeny, J. Lyons-Baral

    "Point cloud technology is now an indispensable tool in geological and geotechnical data collection, interpretation and analysis. Open-pit and underground mines of all sizes are regularly collecting p

    May 1, 2016

  • IIMP
    Los depósitos de sulfuros masivos vulcanogénicos (VMS) de la cuenca Lancones Piura – Perú

    By Alberto Ríos Carranza

    El presente texto describe la evolución de la cuenca Lancones (Piura) y sus estilos de mineralización en la búsqueda de yacimientos vulcogénicos de sulfuros masivos. Dada las características de la c

    May 1, 2016

  • IIMP
    La importancia del oro peruano en el mercado mundial

    By Arístides Sotomayor

    El presente texto señala la importancia del oro a nivel financiero y minero ya que los inversionistas suelen utilizar este metal para obtener ganancias debido al mínimo riesgo existente en la pérdida

    May 1, 2016

  • SME
    Modeling maximum ramp-up and production rates of stoping mining

    "In the conceptual stages of engineering, benchmarking and empirical ratios are commonly the only references for estimating the production rate of greenfield projects. For underground mining projects,

    May 1, 2016

  • SME
    SME Annual Conference features more than 120 sessions, 6,300 attendees

    By Georgene Renner, Chee Theng, William Gleason

    "More than 6,300 people attended SME’s 2016 Annual Conference & Expo in Phoenix, AZ and many of them made the trip to the conference to take part in the excellent technical sessions that are presented

    May 1, 2016

  • SME
    Comparable mineral properties – do they exist for market value appraisals?

    By T. R. Ellis

    "In August 2013, the Appraisal Practices Board of the U.S. Appraisal Foundation issued its “APB Valuation Advisory #4 - Identifying Comparable Properties,” which contains analysis and examples that ma

    May 1, 2016

  • SME
    Annual Review 2015 Exploration Review

    By N. A. Karl, D. R. Wilburn

    "This summary of international mineral exploration activities for the year 2015 draws upon information from industry sources, published literature, SNL Metals & Mining (SNL) (Charlottesville, VA) data

    May 1, 2016

  • IIMP
    Mejora de la eficiencia de molienda determinando el collar de bolas óptimo

    By Levi Guzmán

    "La molienda representa la etapa donde suceden los principales costos en la operación y de una planta concentradora (energía y medios de molienda). Por ello, los esfuerzos en la optimización de esta r

    Apr 1, 2016

  • IIMP
    Nuevas orientaciones en hidrometalurgia de plata para beneficiar minerales refractarios y concentrados complejos

    By Julio Bonelli Arenas

    "El presente artículo señala una metodología de caracterización de minerales de plata que busca separar las fases mineralógicas predominantes de una muestra e identificar las especies minerales en dic

    Apr 1, 2016

  • SME
    "Pit lake water treatment assists with legacy acid rock drainage issue in anticipation of restart at Mount Todd gold mine"

    By P. B. Moran, J. W. Rozelle, J. Forbort

    "The Mount Todd gold mine is located approximately 50 km (31 miles) north of the town of Katherine in the Northern Territory (NT) of Australia just off the Stewart Highway, and was operated in the 199

    Apr 1, 2016

  • SME
    Evolution of a mega project: Update on the Bay Delta Tunnels

    By Howard Lum, Sergio Valles, John Bednarski, Gordon Enas, Jay Arabshahi

    "Water drawn from the Sacramento-San Joaquin Delta provides water supply to 66 percent of California’s population and supports the state’s agriculture industry. The existing through-Delta water system

    Apr 1, 2016

  • SME
    A preliminary evaluation of a through-the-earth (TTE) communications system at an underground coal mine in eastern Kentucky

    "A commercially available through-the-earth (TTE) communications system was evaluated at an underground coal mine in eastern Kentucky. This field study was conducted as part of a larger multisite eval

    Apr 1, 2016

  • SME
    Evaluation of operational strategies for heap leaching of gold ores under subzero temperatures, Coffee Project, Kaminak Gold

    By Todd Schrauf, James Scott, Mark Smith

    "Cyanide heap leaching of gold ores in areas with extremely low winter temperatures requires special considerations to prevent freezing of the leach solution. Factors that impact the solution temperat

    Apr 1, 2016

  • SME
    A preliminary evaluation of a through-the-earth (TTE) communications system at an underground coal mine in eastern Kentucky

    By E.C. Jong

    Resumen ¦ Un sistema de comunicaciones “a través del suelo” (TTE) comercial y disponible fue evaluado en una mina de carbón subterránea en la zona Este del Estado de Kentucky. Este estudio de campo fu

    Apr 1, 2016

  • AUSIMM
    The Use and Abuse of Feasibility Studies – Has Anything Changed?

    By N Cusworth, W R. Mackenzie

    "In 2007, the authors presented a framework for the conduct of resource project feasibility studies and provided guidance on minimum standards and best practice (Mackenzie and Cusworth, 2007).This pap

    Mar 8, 2016

  • AUSIMM
    Making Studies Work – Organisation, Communication and Management

    By P McCarthy

    "This paper is based on 30 years of involvement in feasibility studies as a participant, study manager and the leader of a firm that provides study components and overall study management. The followi

    Mar 8, 2016

  • AUSIMM
    Leadership in Projects – A Recipe for Success

    By A A. Roberts, R F. Dewhirst

    "Extensive literature surveys, research in the project environment and personal experiences both within and consulting to project teams have revealed some consistent ‘people factors’ that contribute m

    Mar 8, 2016