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  • SME
    Massive Tires Keep The Industry Rolling

    One of the biggest challenges for the mining industry is, quite literally, how to the keep the equipment rolling. There is a limited amount of companies that manufacture the 4.2-m- (14-ft-) tall, 5,

    Jan 1, 2008

  • SME
    Special Shotcrete to Improve Open-Type TBM Performance Under Difficult Conditions

    By Sohta Takatsu, Hachiroh Mizubata, Shigeki Kudoh, Kazuya Takekuni, Yoshinori Yamada

    A special type of shotcrete is used to improve the performance of open-type TBM in difficult situations. The Hakamagoshi and Johana tunnels are expressway evacuation tunnels of 3.2 km and 5.1 km in le

    Jan 1, 2001

  • SME
    Hydraulic Lifters Aid in Dragline Maintenance

    Draglines are one of the largest land-based equipment moving across the earth. They typically ranging in size from2.5 to 6.5 kt (2,750 to 7,100 st). Their size, though, makes them difficult to mainta

    Jan 1, 2004

  • SME
    Mine Health and Safety at the Turn of the Millennium

    By Raja V. Ramani

    As the new millennium approaches, it is appropriate to assess the progress that has been made in mine health and safety, a matter of concern to management, labor and government. One can hardly look a

    Jan 1, 1999

  • SME
    Overcoming Challenges in the Construction of the Dublin Port Tunnel

    By Tim Brick, Peter Jewell, Stephen Thompson, Simon Morgan

    The $980m (€750m) Dublin Port Tunnel, Europe’s biggest urban highway tunnel project, was opened in December 2006. The culmination of this immense scheme is set to transform the environment, mobility a

    Jan 1, 2007

  • SME
    Precious Metals Economics

    By Paul Sarnoff

    The economics of precious metals -- depending upon who is involved --could be the economics of hope, of fear, indeed of profit and perhaps survival. For those investors seeking capital gains in a puzz

    Jan 1, 1981

  • SME
    Cathodoluminescence (Cl) Microscopy Application To Refractories And Slags

    By R. E. Moore

    Refractories are unique ceramic materials, which are used in large quantities in steel making furnaces, metal smelting vessels, and glass melting tanks. They are required to possess high thermal shock

    Jan 1, 2001

  • 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
    The Hallandsås Dual Mode TBM

    By Werner Burger

    The Hallandsås project with a long history, first started in 1991, is well known in the tunneling community. In the past it has been stopped twice for technical and environmental reasons. The third at

  • SME
    Discover mining?s history at Arizona Mining and Mineral Museum

    While SME is hosting its Annual Meeting at the Phoenix Convention Center, Feb. 28 to March 3, one of the finest collections of mining history will be on display just 15 blocks away at the Arizona Mini

    Jan 1, 2010

  • SME
    Battery Park Truck Sewer Emergency Tunnel Project

    By Mark Rybak

    On August, 31, 2006, Tropical Storm Ernesto hit the City of Richmond, Virginia. The Battery Park area was hit particularly hard, as flooding forced an evacuation of the area. A large sinkhole collapse

    Jan 1, 2008

  • SME
    Research on the Roof Advanced Breaking Position of Large Mining Height Working Face in Shallow Coal Seam

    Fully mechanized longwall mining with large mining heights (LMHs) in shallow-depth thick coal seams has been widely applied in Shenfu coalfield, China. Dynamic loading and rib spalling is serious when

    Jul 28, 2020

  • SME
    State Summaries ? Arizona

    By N. Niemuth

    Strong demand for copper in developing nations such as China and India, plus the additional demand for industrial minerals to supply the Arizona construction market, brought about a record-setting yea

    Jan 1, 2008

  • SME
    Geologists Add Value at Newmont’s Nevada Mines – Part Two

    By Wayne Trudel, Eric Saderhold, Lloyd McEvers, Lori Clarke, Charles Lynn Bolin, Leroy Schutz

    Editor’s note: This is the second part of a two-part series on how mine geologists added about 141t (4.53 million oz) at Newmont Mining’s gold operations in Nevada during 2003. Part one (ME, July2004

    Jan 1, 2004

  • SME
    Challenges And Solutions To Designing Deep Excavations For Urban Transit Stations

    By Ching-Liu Wu, John Hawley, Andrew H. Liu, James Chai

    The Hatch Mott MacDonald/Bechtel Joint Venture team is designer and construction manager for the 5.25-mile Tunnel Segment of the overall 16-mile Silicon ValleyRapid Transit Project, which extends the

    Jan 1, 2007

  • SME
    Latin Mining - Goldcorp?s New Peñasquito Mill

    By Barry Olson

    The Peñasquito deposit in Mexico is one of the largest grassroots precious metal discoveries to be developed in recent years. Goldcorp Inc. acquired the gold-silver-lead-zinc property with the acqui

    Jan 1, 2009

  • SME
    The Kensico-City Tunnel Will Add Reliability to New York City’s Water Supply System

    By Verya Nasri, Heather M. Ivory, Kevin Clarke, Eric Cole

    Development of the New York City Water Supply System The New York City water supply system serves a population of almost nine million, including residents in neighboring counties. Peak day demands

    Jan 1, 2007

  • SME
    Soil Deformation Analysis During TBM Excavation: Comparing Three Different TBM Technologies Used During the Construction of the Toulouse Metro Line B

    By Richard Kastner, Emilie Vanoudheusden, Fabrice Emeriault, Jacques Robert

    INTRODUCTION The subway line B of Toulouse (France) has been realized with three different tunnel boring machines (TBM) techniques: Contracts 2 and 5 are excavated with earth-pressure balanced TBM

    Jan 1, 2007

  • SME
    Biosolubilization of Phosphate Ore

    By Janine Acasi, Robert D. Rogers, Jonathan K. Trautman, Richard C. Cronn, James H. Wolfram

    The demand for phosphate will continue into the future, because phosphate is currently irreplaceable as a plant nutrient and in many chemical applications. Phosphate is not recycled, so the supply mus

    Jan 1, 1989

  • SME
    Innovative NATM Technology for Suburban Tunnelling Metro Section 306, Bochum, Germany

    By Axel Nitschke, Josef Arnold

    Bochum’s Underground Lot 306 was characterised by a confined site and unique tunnelling methods. A highly mechanized construction concept was developed to achieve high progress rates. Bespoke backup s

    Jan 1, 2005