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  • SME
    Precious Metal Deposits Related to Alkaline Igneous Rocks – A Space-Time Trip Through the Cordillera

    By Felix E. Mutschler

    Alkaline rock-related precious metal deposits include: • orthomagmatic platinum group elements (PGE) ± gold (Au); • porphyry copper-silver-gold (Cu-Ag-Au, ±PGE); • epithermal Au-only, and Au-Ag-bas

    Jan 1, 1991

  • SME
    Very White Commercial Grade Muscovite Mica From A New Sedimentary Source

    By D. M. Avant, S. M. Pickering

    A variety of grades of very white muscovite mica are now being produced from sedimentary sands and clays in Central Georgia. The mica is naturally concentrated near the base of the lens-shaped kaolin

    Jan 1, 2002

  • SME
    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

  • SME
    Water Tunnel in Liaoning Province, Northeast China

    By Li Jiuping, Zhong Gang, Chen Yong Zhang, I. Michael Gowring

    The Liaoning Dahuofang Reservoir Water Transfer Project is an important development for the Department of Water Resources of Liaoning Province in northeastern China. The 85.3 km water conduit will tra

    Jan 1, 2007

  • SME
    BWARI Tunneling Underway

    By Thomas L. Richardson, David R. Chapman, Gary W. Gilbert

    The two contracts of the Big Walnut Augmentation/Rickenbacker Interceptor(BWARI) sewer project for the City of Columbus, Ohio total nearly 35,000 feet of 14and 12-foot diameter tunnel. EPB TBMs will i

    Jan 1, 2005

  • SME
    Determination Of Volumetric Changes From Laser Scanning At An Underground Limestone Mine

    By B. Slaker

    The ability to detect and quantify ground movements in underground mine workings is of the utmost importance to the safety of miners and continuity of operations. Rib sloughage is one of the most comm

    Feb 27, 2013

  • SME
    Belt Conveyor Transfer Points

    By H. Colijn

    Belt conveyors have proven themselves for many years as a dependable and low cost method of handling bulk materials at high flow rates. The success of a belt conveyor system greatly depends on the ini

    Jan 1, 1971

  • SME
    Mining Foundation of the Southwest Honors its 2005 Inductees

    The 23rd annual American Mining Hall of Fame Awards Banquet sponsored by the Mining Foundation of the Southwest will be held at the Tucson Marriott University Park Hotel, Tucson, AZ on Saturday, Dec.

    Jan 1, 2005

  • SME
    San Diego Courthouse Commons Tunnel: Challenges and Design Solutions - NAT2022

    By Jeremy Stone, Yiming Sun, John Stolz

    The Courthouse Commons Tunnel facilitates the secure transfer of inmates between the County Jail and State Courthouse across a city block in downtown San Diego, California. This shallow tunnel was exc

    Dec 1, 2022

  • SME
    Geophysical Assessment Of The Mount Princeton Geothermal Area, Colorado ? Summary

    By M. Batzle

    The upper Arkansas basin has some of the greatest potential for geothermal development in Colorado. Over several summers, students conducted an investigation using seismic, gravity, and magnetics in

    Jan 1, 2011

  • SME
    Passive-Treatment of Acid Rock Drainage: What is the Potential Bottom Line?

    By James J. Gusek

    Passive-treatment systems that mitigate acid-rock drainage (ARD) from coal mines have operating since the mid-1980s. Large systems at metal mines are being contemplated. A 95L/sec (1500-gpm) capacity

    Jan 1, 1995

  • SME
    Interpretation Of The Effect Of Frother Type And Concentration On Flotation Performance In An OK3 Cell

    By B. A. Comley

    Over the past few decades a great deal of effort has gone into characterizing the effects of frother type and concentration in flotation using a variety of two-phase techniques. Whilst useful and info

    Jan 1, 2007

  • SME
    Markets for Southern Powder River Basin Coal

    By G. E. Vaninetti

    During its modem era, the southern Powder River Basin (PRB) in Wyoming has grown from meager origins in the early 1970s to become one of the most important coal-producing regions in the United States.

    Jan 1, 1994

  • SME
    Mathematics Of Mine Sampling III Whither Geostatistics?

    By Robert F. Shurtz

    This paper suggests that pre-occupation with the random process model notised by geostatisticians may result in neglect of more promising techniques, especially since the random process model does not

    Jan 1, 1980

  • 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
    Rehabilitation of the 80-Year-Old North Outfall Sewer (NOS) Tunnel

    By Wolfgang Roth

    In 1990, a residential area above the North Outfall Sewer (NOS) tunnel constructed in 1924, experienced subsidence. After sewage was diverted into the North Outfall Replacement Sewer (NORS), soil prob

    Jan 1, 2008

  • SME
    Mining Engineering – Shovel and Excavator Survey

    By Lane White

    In mid-April 1992, MINING ENGINEERING mailed a survey questionnaire relating to mining shovels and hydraulic excavators to 125 SME members working at surface mines or at the headquarters of companies

    Jan 1, 1992

  • SME
    Tire maintenance requires an entire team effort

    By Roger Best

    In the mining industry, where some of the vehicles are larger than a one-story house, tire maintenance cannot be accomplished by the tire shop alone. It takes an army of people to maintain a fleet of

    Jan 2, 2010

  • SME
    Annual Review 1992 – Exploration 1992

    Worldwide minerals exploration slipped in 1992 from 1991 levels. Although industrial production figures showed the US economy emerging from recession in early 1992, it was not until February 1993 that

    Jan 1, 1993

  • SME
    Signal Processing With Wavelet Transform For In-Seam Seismic Based Mine Void Detection Technique

    By M. Ge

    Signal processing is a major challenge for In-Seam Seismic (ISS) technique. Fourier Transform is an important tool for signal processing such as frequency analysis. However, for ISS signal, localized

    Jan 1, 2007