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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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