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  • SME
    U. S. Borax: Still Mining Borates After 131 Years

    By Steve Kral

    Borates are minerals that contain boron. Trace amounts exist in rocks, soil, water and people. Boron-containing ores are rare and U.S. Borax, a subsidiary of Rio Tinto Borax, controls one of the wor

    Jan 1, 2003

  • SME
    Microtunneling For Utilities Under Harold Railroad Interlocking

    By William Reininger

    Microtunneling provides a necessary solution for multiple utility crossings associated with the New York Metropolitan Transportation Authority Capital Construction Company?s (MTACC) Eastside Access Pr

  • SME
    New Application Of Organic Coating To Existing Ground Support Products - Preprint 09-107

    By M. Slatter

    The need for anti-corrosion coatings has existed for many years in the ground support industry, but the application requirements have made coating selection limited. Varying groundwater and chemical

    Jan 1, 2009

  • SME
    Support Of The Leipzig City—Tunnel Extension Using A Tie-Back Supported Freeze Wall

    By Helmut Hass, Michael B. Gilbert

    The extension of the commuter railway system (S-Bahn) in Leipzig, Germany willrequire the construction of an underground line crossing the downtown area of thecity to tie the Bavarian Station in the S

    Jan 1, 2007

  • SME
    Construction of the Sacramento River Tunnels on the Lower Northwest Interceptor Sewer, Sacramento, California

    By Dan Martz, Bill Moler, David Young, Wally Chen, Matthew Crow, Steve Norris, Tolga Togan

    Two 610 m (2000 ft) long tunnels were driven through water bearing silts, sands and clays beneath the Sacramento River using a 4.59 m (15.1 ft) diameter Earth Pressure Balance Tunnel Boring Machine (E

    Jan 1, 2007

  • SME
    Dysfunction Junction: When Inalterable Rules Meet Evolving Technology

    By Mark N. Savit

    It is indeed a rarity for a non-engineer, let alone a lawyer, to even be considered for a mining-related award, especially where that award is for significant contributions to technical progress in th

    Jan 1, 2008

  • SME
    Mining And Community Development: From Rethoric To Practice

    By E. Sirolli

    In recent times, with rare exceptions, most economically viable ore discoveries have been large, low-grade and located in remote parts of the world. Mining companies have often shown to be incapable o

    Jan 1, 2012

  • SME
    Water-Jet-Assisted Roadheaders

    By Bradley V. Johnson, Robert J. Timko, Edward D. Thimons

    Water-jet-assisted cutting involves the use of a mechanical cutting bit in combination with a high-pressure water jet directed just in front of the bit tip. Such a jet can offer benefits in terms of i

    Jan 1, 1987

  • SME
    A Computer Design Of Ultimate Pit Limit By Using Transportation Algorithm

    By Panlop Huttagosol

    The use of computer models to design ultimate pit limit of an open pit mine during its feasibility study has become an emphasized procedure in mining. It is a normal practice in open pit mine design t

    Jan 1, 1992

  • SME
    Siemens Controllers Aid Processing at the Madero Project

    By Rolando Gonzalez

    Mexico’s role in the world economic community continues to grow. And it is important that the country makes use of its natural wealth, including its large underground deposits of minerals and metals.

    Jan 1, 2003

  • SME
    Kenya- A New Source Of Titanium Minerals

    By J. C. Potvin

    Although the occurrence of deposits of titanium minerals on Kenya’s present day beaches and adjacent dune systems has been well documented, the potential for older formations to host economically viab

    Jan 1, 2001

  • SME
    A Computer-Based Hazard-Awareness Assessment Program For Surface Mines – Preprint 97-120

    By C. J. Bise, D. A. Poukhovski

    Two integral components of the 30 CFR 48 training requirements mandated for new miners, newly employed experienced miners, and the annual refresher training of all miners are hazard recognition and pr

    Feb 24, 1997

  • SME
    Fluorspar – trends and changes in production and use

    By Lawrence Pelham

    Introduction Fluorspar demand or consumption has been taken for granted in recent years, except for those that produce, market, or consume the commodity. Thinking used to be that as the steel and alu

    Jan 11, 1986

  • SME
    Technical Note - Mine modifications for economic survival —a case study

    By R. L. Grayson, G. Mishra

    Introduction Many old underground mines have been developed extensively into reserves requiring large numbers of workers to maintain and rehabilitate lengthy track haulages and/or belt conveyor sys

    Jan 3, 1987

  • SME
    Cliffs And Associates Limited Circored® Iron Plant

    By E. C. Dowling, S. A. Elmquist, L. A. Kipfstuhl

    The Cliffs and Associates Limited (CAL) 500,000 tpy HBI plant located in Trinidad was commissioned after modifications in early 2001. This plant employs the novel Lurgi Circored® process to reduce iro

    Jan 1, 2002

  • SME
    Water Resources Development In The Arid Andean Antiplano Southern Bolivia

    By S. A. Osterberg, J. L. Breckenridge, R. S. Popielak

    Multidisciplinary investigations were completed to prove the availability of water resources for the proposed San Cristóbal silver-lead-zinc mine in the arid Altiplano of Bolivia. Surface water resour

    Jan 1, 2002

  • SME
    Application of Column Flotation to Lead and Zinc Beneficiation at Cominco

    By M. J. Fairweather, J. R. Egan, W. A. Meekel

    Cominco Metals, in cooperation with two Canadian Universities and the Government of Canada, is developing applications for column flotation in the treatment of lead and zinc ores. Plant scale results

    Jan 1, 1988

  • SME
    Grouting For Groundwater Control Milwaukee Inline Project

    By Edwin F. Shorey, Richard F. Coon, Steven B. Fradkin

    Crosstown Interceptor Phase IA is the first deep tunnel element of the Milwaukee Inline Project. The tunnel contract includes 6,492 meters (m) of 9.1-m-diameter tunnel, two access shafts, and partial

    Jan 1, 1987

  • SME
    Planning and Preliminary Design of the North-South Bypass Tunnel, Brisbane, Australia

    By Tony Peglas, Harry Asche, Eva Wood

    The North-South Bypass Tunnel is a new $AUD1.5 billion underground traffic route in Queensland, Australia, a project of the Brisbane City Council. The tunnel is approximately 5.2 km long, bypassing th

    Jan 1, 2005

  • SME
    Utilization of lignite fly ash as hydraulic binder and backfill material

    By I. Gombköto, G. Földing, G. Mucsi, B. Csoke, J. Faitli, B. Kovács

    This paper summarizes the main achievements of our previous project entitled "Development of a technological system producing quality guaranteed fly-ash based binder". Furthermore, this study deals wi

    Jan 1, 2011