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  • SME
    Comparison Of Arched And Flat Seal Designs Using Finite Element Analysis

    The failure of a seal in an underground coal mine can have devastating consequences. Traditionally seals have been constructed as flat walls. Large hydraulic dams, on the other hand, are constructed

    Jan 1, 2007

  • SME
    Pulverized Coal Injection for Blast-Furnace Operation

    By T. W. Oshnock

    Pulverized coal (PC) and other injectants can be injected into the blowpipes of a blast furnace to decrease coke requirements. Throughout the history of blast-furnace development, there have been many

    Jan 1, 1988

  • SME
    Predominance Area Diagrams Bounding the Cu-As-S-O System’s 3D Predominance Diagram at 900 K (627 °C) Mining, Metallurgy and Exploration (8a1d5964-4d01-4605-bf23-bcfbb4667775)

    By M. Sadegh Safarzadeh, Stanley M. Howard

    The two-dimensional predominance area (Kellogg) diagram (PAD) surfaces bounding the three-dimensional Cu-As-S-O system were constructed at 900 K. The computations employed gases As4O6(g), O2(g), and S

  • SME
    Predominance Area Diagrams Bounding the Cu-As-S-O System’s 3D Predominance Diagram at 900 K (627 °C) Mining, Metallurgy and Exploration

    By M. Sadegh Safarzadeh, Stanley M. Howard

    The two-dimensional predominance area (Kellogg) diagram (PAD) surfaces bounding the three-dimensional Cu-As-S-O system were constructed at 900 K. The computations employed gases As4O6(g), O2(g), and S

  • SME
    APM Tunnels at Phoenix Sky Harbor International Airport

    By David M. Jurich, Randy J. Essex, Alex de Aboitiz

    An Automated People Mover (APM) transit system is planned for the growing Phoenix Sky Harbor International Airport. The APM will improve passenger movements between the terminals, and provide a link t

    Jan 1, 2005

  • SME
    Double Shields to Build the High Speed Railway Network in Spain

    By E. Fernandez

    HIGH SPEED RAILWAY NETWORK Spain is a very adequate country to develop the high speed railway network thank to its geographical feature which has a 600km long radius, from Madrid- the capital that

    Jan 1, 2005

  • SME
    Barrick Goldstrike Roaster Facility Dry Grinding And Leaching

    By D. Denton, L. Buckingham

    The dry grinding and leaching circuits of the Barrick Gold’s new Roasting Facility at Goldstrike Mine in Nevada, USA incorporate well proven technologies in a unique combination. During the design of

    Jan 1, 2001

  • SME
    Annual Review 2005

    By F. Freme

    Coal production in the United States reached a record level in 2005, ending the year at 1.03 Gt (1,133.3 million st) according to preliminary data from the U.S. Energy Information Administration (Tabl

    Jan 1, 2006

  • SME
    Are Estimators Getting It Right? Comparing Actual And Estimated Costs

    By J. Leinart

    As is readily apparent, the reliability of the early-stage costs estimated for any mining project are critical to the viability of that project. An estimate too high might leave a potentially profitab

    Feb 27, 2013

  • SME
    The Impact Of Surface Features Above Underground Mines On Emergency Response - Preprint 09-066

    By N. T. Lowe

    The National Institute for Occupational Safety and Health (NIOSH), Spokane Research Laboratory (SRL), investigated a means to evaluate the potential impact of surface conditions above underground mine

    Jan 1, 2009

  • SME
    Tappan Zee Crossing of the Hudson River, New York

    By Ian Hooper, Alan Winter, Stefan Sadokierski, Craig Covil

    The existing Tappan Zee Bridge was built in the late 1950s and has been working over its design traffic load for some time now. A new project, which is being jointly sponsored by the New York State Th

    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
    Construction of the Big Walnut Augmentation/Rickenbacker Interceptor Tunnel (BWARI, Part 1) —Columbus, Ohio

    By Glen D. Frank, Jeremy P. Theys, Mina M. Shinouda, Gary W. Gilbert

    PURPOSE OF THE PROJECT The Big Walnut Augmentation Rickenbacker Interceptor project began in 1995with the preparation of the Scope of Services for the design of the Rickenbacker Interceptor, with

    Jan 1, 2007

  • SME
    Special Report : Consultants Streamline, Sell More When Work is Harder to Find

    By Hans W. Schreiber

    Most geologic and mining engineering consulting firms* began to experience the recession with declining billing levels, number of inquiries, and proposal requests in late 1981 or early 1982. As of tod

    Jan 2, 1983

  • SME
    Comparison of Different Blast Design Models, Using a Blasting Software

    By Roozbeh Afzali

    Designing an appropriate tunnel blasting pattern reduces the cost of rock breakage and subsequent operations such as loading, haulage and support of tunnels. For that reason, we developed a software t

    Jan 1, 2008

  • SME
    In Situ Leaching Of Uranium: History, Technology And Economics

    By T. C. Pool

    Physical and chemical conditions permitting, in-situ leaching (ISL) of uranium offers a variety of advantages over conventional production methods including less surface disturbance and less solid was

    Jan 1, 2000

  • SME
    Some Thoughts On the Current Situation and A Look Ahead

    By Richard J. Stoehr

    In his time on earth, man has mined about 93.3 kt (3 billion oz) of gold. About one-half of this has been produced in the past 35 years. Roughly one-third of this gold is held as reserve in Central Ba

    Jan 11, 1984

  • SME
    A Combination Blind Or Reaming Drill For Raise Construction

    By L. "Andy" Anderson, Stephen N. Short, James E. Friant

    Since the introduction of "boxhole" drilling in South Africa in 1973, the concept of a blind raise, drilled upward from below, has become an accepted mining practice. A combination machine, capable of

    Jan 1, 1985

  • SME
    New Engine For Ultra-Class Trucks; Cummins Unveils Its 3,728 Kw (4,000 Hp) Platform

    In its largest product launch in company history, Cummins Engines welcomed more than 200 customers, vendors and media to witness the unveiling of its new QSK95 engine at its Seymour Engine Plant in Se

    Jan 1, 2012

  • SME
    The Affect Of Surface/Ground-Water Interactions On Zinc Concentrations In Groundwater Along Silver Creek, Summit County, Utah

    By Kerry Gee, Gary Colgan, James Fricke

    Introduction Elevated zinc concentrations are observed in groundwater within alluvium adjacent to Silver Creek east of Park City, Utah. The study area is located in a small valley one and one-half

    Jan 1, 2005