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  • SME
    Exploratory Fea & Conceptual Design Findings Of Large Diameter Segmentally Lined Shaft

    By D. Kruse

    Top down constructed large diameter (up to 90 m [300 ft]) shaft design and constructability issues present an interesting suite of challenges and opportunities highlighted in this paper. The study cov

    Jan 1, 2011

  • SME
    The Order of Kinetic Models, Rate Constant Distribution, and Maximum Combustible Recovery in Gilsonite Flotation Mining, Metallurgy and Exploration

    By Yousef Ghorbani, Jafar Abdolahi Sharif, Fatemeh Kazemi, Ataallah Bahrami

    Kinetic models are the most important tool for predicting and evaluating the performance of flotation circuits. Gilsonite is a natural fossil resource similar to an oil asphalt, high in asphaltenes. H

  • SME
    The Order of Kinetic Models, Rate Constant Distribution, and Maximum Combustible Recovery in Gilsonite Flotation Mining, Metallurgy and Exploration (b37efcd2-92b5-49b0-85f9-0979b717b191)

    By Yousef Ghorbani, Jafar Abdolahi Sharif, Fatemeh Kazemi, Ataallah Bahrami

    Kinetic models are the most important tool for predicting and evaluating the performance of flotation circuits. Gilsonite is a natural fossil resource similar to an oil asphalt, high in asphaltenes. H

  • SME
    A new Perspective: Regional Development with Mining as a By-Product The Example "NFN-NaturFreizeitverbund Niederrhein GmbH"

    By H. -J. Langhoff

    "The paper describes not a result, but a starting point to implement sustainable development to a region characterized by a typical down river landscape, agriculture, and extractive industry. The Natu

    Jan 1, 2005

  • SME
    Industrial Minerals 2002

    Editor’s note: As usual, the June issue features an industrial minerals review. And some thanks are in order. Thank you to the industrial minerals annual-review editor, to the technical committees

    Jan 1, 2003

  • SME
    Analysis Of Sudden Floor Heave In Deep Western U.S. Mines - Preprint 09-010

    By H. Maleki

    As mining continues toward deeper reserves in thick western US coal fields, the control of mining induced-seismicity has become a priority in many operations in Utah, Colorado, and Wyoming. Gradual f

    Jan 1, 2009

  • SME
    International education of mining engineers ? an update on the Australian experience and international opportunities for collaboration

    Collaboration between education providers is the key to long-term sustainability and improved quality in mining education. The mining industry is now, more than ever, an industry doing business on a g

    Jan 2, 2010

  • SME
    A Company's Response To Federal Coal Leasing

    By Robert E. Murray

    The title of my paper, "A Company's Response to Federal Coal Leasing," brings to mind a picture of a dog chasing its tail. This is what the coal industry, has been doing since the Federal coal le

    Jan 1, 1982

  • SME
    Pit Optimization on Clustered Realizations: Identifying Functional Scenarios Mining, Metallurgy and Exploration

    By Tyler Acorn, Brandon Wilson, Jeff Boisvert

    Scenario-level uncertainty is a representation of large-scale differences encountered when considering ultimate mining pits optimized over various subsets of stochastic realizations. Accounting for sc

  • SME
    Pit Optimization on Clustered Realizations: Identifying Functional Scenarios Mining, Metallurgy and Exploration (91c0eb25-b83e-4f9f-8ccb-a6f7d555458c)

    By Tyler Acorn, Brandon Wilson, Jeff Boisvert

    Scenario-level uncertainty is a representation of large-scale differences encountered when considering ultimate mining pits optimized over various subsets of stochastic realizations. Accounting for sc

  • SME
    Combined Effect of Operating Parameters on Separation Efficiency and Kinetics of Copper Flotation Mining, Metallurgy and Exploration

    By Yousef Ghorbani, Abolfazl Danesh, Fatemeh Kazemi, Ataallah Bahrami, Morteza Abdollahi, Mohammad Raouf Hosseini

    This study aims to investigate the effects of operational variables on concentrate grade, recovery, separation efficiency, and kinetic parameters of the copper flotation process. For this purpose, the

  • SME
    Performance of Tunnel Segments Reinforced with Synthetic Macro Fibers - RETC2021

    By Todd Clarke, Ralf Winterberg

    For more than a decade the tunneling industry has explored the potential and benefits of macro synthetic fiber (MSF) reinforced concrete solutions for precast tunnel segments. Parallel to industry inv

    Jun 13, 2021

  • SME
    A New Packed Column Flotation System

    By David C. Yang

    A packed column (or static tube) flotation system is an innovative technology which utilizes a controlled dispersion reagent scheme and a new machine. The unique aspect of the machine is its packed-be

    Jan 1, 1988

  • SME
    Experimental Shaft Machine for Nuclear Waste Disposal

    By Dennis Ofiara, Michael Lewis

    An experimental 1.75 meter Shaft Boring Machine was designed and manufactured by The Robbins Company. The drill was used by contractor Drillcon Raise AB to drill test shafts at an SKB underground test

    Jan 1, 2005

  • SME
    Medium-Temperature Pressure Leaching Of Copper Concentrates - Part II: Development Of Direct Electrowinning And An Acid-Autogenous Process

    By J. O. Marsden

    Part I in this series of papers considered the chemistry of medium-temperature pressure leaching of copper sulfide concentrates and reviewed the metallurgical testing and initial process development f

    Jan 1, 2007

  • SME
    Construction of the Combined Sewage Overflow Tunnel for the City of Fall River

    By Shemek Oginski

    The 5 km (16,194 lf) of 6.1m (20 ft) diameter TBM driven tunnel built by the J.F.Shea Co. will serve as sewage overflow storage. The TBM tunnel and four connecting tunnels excavated by drill and blast

    Jan 1, 2005

  • SME
    North American Tunneling 2010 Conference Highlights

    Even though the economy of the United States remains in recession ? or not, depending on which economist you listen to ? muicipalities still need improved transportation, water and wastewater transit

    Jan 1, 2010

  • SME
    Comparison of Face Pressurized Shield Methods in Various Soil Conditions

    By Klaus Rieker

    Over the last 30 years Wayss & Freytag Ingenieurbau AG has gained a lot of experience in mechanized tunnelling on various major projects. During this period most important developments concerning the

    Jan 1, 2005

  • SME
    Purification of high-grade calcite ore by flotation with alkyl diamines

    By P. Dhar, H. R. Kota, M. Thornhill

    Precipitated calcium carbonate is used as a filler and coating material in the manufacturing of paper because of its high brightness and light scattering characteristics. However, beneficiated calcite

  • SME
    Gravity Sewer Tunnel Liner Corrosion Protection—Part Two - RETC2023

    By Jon Y. Kaneshiro, Eric Dawson, Pooyan Asadollahi, Steven Hunt

    This paper provides updates to the paper published by the lead author at RETC 2011 with a summary of developments in technologies, products, and approaches to corrosion analyses of gravity sewer tunne

    Jun 13, 2023