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  • SME
    An Equipment Selection Application Using The AHP Method

    By M. Yavuz

    Multiple Criteria Decision Making (MCDM) is one of the most considerable branches of Operation Research. MCDM refers to making decisions in the presence of multiple, usually conflicting, criteria. The

    Jan 1, 2007

  • SME
    South Interceptor Tunnel Construction Using a Lovat EPBM

    By Dennis Molvik, Omar Fulton, Chris D. Breeds, Don Gonzales

    This paper presents and describes the South Interceptor Parallel Phase III Contract C93012C, which involved construction of a nominal 2.7 m (9-ft) finished diameter sewer conveyance using both pipe ja

    Jan 1, 2003

  • SME
    Pit Slope Design Challenges In Residual Soils And Weathered Rock: Background And A Case Study

    By J. Geyer, B. T. Burton, H. W. Newcomen

    For open pits developed in tropical climates the upper portions of the pit walls are often located in residual soils and weathered rock. Due to the presence of relict structures, and the relatively l

    Jan 1, 2000

  • SME
    Twin TBM with Four Cutters for Subway Station (RoppongiStation in the Tokyo Metro Line 12)

    By Susumu Uchiyama

    This machine was manufactured for excavation of the Roppongi station of the Tokyo Metro Line 12. This machine can excavate both the platform and the rail track at the same time in locations where t

    Jan 1, 1999

  • SME
    Construction Of Drilled Shafts For The Upper Northwest Interceptor, Sections 1&2 Project?Sacramento, CA

    By Jeremy Theys

    The Sacramento Regional County Sanitation District (SRCSD) is improving the sewer system in the Natomas area of Sacramento, CA. The Upper Northwest Interceptor (UNWI) system is an ongoing series of tu

  • SME
    Northern Dynasty Mines’ Pebble Project: A Strategic Resource For Alaska

    By Stephen Hodgson, Ken Brouwer

    September 2005, Northern Dynasty Mines announced the discovery of a new, high-grade deposit at its Pebble project in southwest Alaska. The product of insightful geological investigation, Pebble East,

    Jan 1, 2007

  • SME
    Opportunities At Northshore Mining’s Concentrator And Pelletizer

    By S. Jayson Ripke, Shane Hoff

    Cleveland-Cliffs’ Northshore Mining Company operates a magnetic iron ore (taconite) concentrator and pelletizer in Silver Bay, MN. These are two recent cost reduction projects: 1. Rougher Magnetic

    Jan 1, 2005

  • SME
    Sag And Ball Mill Operation In Weak Network Conditions

    By P. Burmeister, R. A. Errath, A. Sapin

    Sag Mills are becoming bigger in size almost every year. Concentrator plants are also becoming larger with more SAG and Ball Mills units with Gearless Mill drives installed in one plant. In contradict

    Jan 1, 2001

  • SME
    Turbulent diffusion coefficient in mine airways

    By N. P. Widodo

    The ventilation measurements by tracer gas method at Pongkor gold mine show that effective diffusion coefficient, E, at straight airways indicated a similar range of measured one by the laboratory exp

    Jan 1, 2009

  • SME
    Precambrian Shield Gold Exploration Trends Detailed

    By James W. Stewart, A. C. Colvine

    Introduction Precambrian shield terrains the world over are experiencing an unprecedented level of concerted exploration for lode gold deposits. Reasons for this include: • The increase in the price

    Jan 12, 1984

  • SME
    61st Iteration of MINExpo Upbeat, Optimistic

    By Tim O’Neil

    “America’s mining industry brings good jobs to communities across America and provides the energy, minerals and equipment that are vital to our economic security and our way of life.” That was the

    Jan 1, 2004

  • SME
    Value Creation Through Strategic Mine Planning and Cutoff Grade Optimization

    The OptiPit® software program is developed based on expertise gained at the Colorado School of Mines (CSM) using Mixed Integer Linear Programming (MILP) techniques. This program has been developed to

    Jan 1, 2007

  • SME
    Aggregate Plant Inventory Management Through HMA Mix Optimization - Preprint 09-097

    By K. Awuah-Offei

    An aggregate plant may have difficulty balancing product stockpile inventories if hot mix asphalt (HMA) design engineers do not account for aggregate inventory during mix design. Yet HMA design engine

    Jan 1, 2009

  • SME
    An Evaporative Inspired Air Cooler For Recirculatory Breathing Apparatus - Introduction

    By R. C. Burton

    One of the major problems encountered with recirculatory breathing apparatus presently used by mine rescue teams is that the inspired air becomes uncomfortably, and often dangerously, hot. This is als

    Jan 1, 1980

  • SME
    Nickel Laterite Processing: Second Generation Design Considerations

    By N. L. Hayward, V. H. Ness

    In the past decade Australia has seen the development, construction and commissioning of three complex processing plants for the treatment of lateritic nickel ores. These have all been based on high p

    Jan 1, 2001

  • SME
    Suggested and Prescriptive Means and Methods—Are They Really in the Owner’s Interest?

    By Gary Almeraris, Vincent Jr Tirolo

    Traditionally, “Means and Methods” were the sole responsibility of Contractors. However, because of a number of litigious projects in the 1970s, Owners and their Engineers began including Suggested Me

    Jan 1, 2005

  • SME
    Unitized, Portable Flotation-Leach Plants For Treating Partially Oxidized Gold And Silver Ores

    By Paul H. Johnson

    Resource Engineering and Development, Inc. is desigining and building a portable 150 to 225 tpd, flotation-cyanide leach plant with unitized, skid-mounted components. This plant design, with its porta

    Jan 1, 1981

  • SME
    More Than 1,200 Exhibitors on Hand at MINExpo 2004

    By Georgene Renner, William R. Yernberg, Steve Kral

    Allmand exhibited its LSC 100Light Sequence Commander, the mining industry’s first automatic lighting and command control system. The system is available with all of Allmand’s portable light towers.

    Jan 1, 2004

  • SME
    California High Speed Rail: Driving the Next Level in Dynamic Tunnel Design - Project Description

    By Carrie Pourvahidi

    The California High Speed Rail Authority (Authority) was created by the State of California through legislation in 1996. The purpose of the Authority is to plan, construct, finance and operate a state

    Jan 1, 2008

  • SME
    Mountaintop Removal Controversy Slows West Virginia Coal Mining

    By Syd S. Peng

    Mountaintop removal (MTR) mining started in West Virginia nearly 30 years ago. This surface mining method can extract multiple coal seams as thin as a few inches in whole and minimum rock dilution in

    Jan 1, 2000