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  • SME
    Synthetic rutile from a low-grade titania slag using sulphation-roasting process

    By I. M. Morsi, S. Z. El-Tawil, O. A. Fouad, K. A. El-Barawy, M. B. Morsi, M. M. Nasr

    Upgrading of a low-grade titanium slag (~55% TiO2) with high silica, calcia, magnesia and iron contents has been studied using sulphation roasting technique using SO2/air gas mixture followed by hydro

    Jan 1, 2005

  • SME
    An Active Proximity Warning System For Surface And Underground Mining Applications

    By W. H. Schiffbauer

    NIOSH has developed an active proximity warning system called HASARD (Hazardous Area Signaling and Ranging Device) for warning workers as they approach known dangerous areas around heavy mining equipm

    Jan 1, 2001

  • SME
    Minnesota Iron Mining Industry Looks at Change

    By William R. Yernberg

    The combined 76th Annual Minnesota Section of SME meeting and 64th Annual University of Minnesota Mining Symposium were held April 8and 9, 2003, in Duluth, MN. This year’s theme was “Stakeholders, Par

    Jan 1, 2003

  • SME
    Selective Copper Recovery with HCl Leaching from Copper Oxalate Material Mining, Metallurgy and Exploration (d35b21fb-0dcb-4cd4-94b9-4575e3b19bb0)

    By Hasan Nizamoğlu, Z. Abidin Sarı, Aslıhan Demiraslan, M. Deniz Turan, Tolga Depci

    In this study, recovery of copper from solid material (obtained by leaching of chalcopyrite with oxalic acid in the presence of hydrogen peroxide) with a copper oxalate structure was carried out selec

  • SME
    Exploratory Shafts For The Nuclear Waste Repository In Basalt

    By Birger Schmidt

    INTRODUCTION Conceptual design of the first Exploratory Shaft (ES-I) for the Nuclear Waste Repository in Basalt (NWRB) began in July 1981; detailed design began in February 1982, and was largely co

    Jan 1, 1987

  • SME
    Mining in Cuba

    By Louis W. Cope

    Since its discovery, Cuba has been called the “Pearl of the Antilles.” The country remains that, albeit a little tarnished these days. In Havana, many of the buildings are being refurbished, while s

    Jan 1, 2003

  • SME
    New Developments In Plastics Separation

    By J. I. Schoenherr, G. Schubert, F. Demczenko

    The currently known and used plastics and rubber recycling or sorting processes cannot be applied efficiently and economically due to large amounts of fine bulky materials (<3 mm). These wastes are mo

    Jan 1, 2002

  • SME
    Centrifugal Concentrators -A New Era In Gravity Concentration -The Experience Of CVRD Research Center

    By E. Costa Silva

    Among the methods of mineral processing, gravity concentration methods are, probably, those which have lower costs, higher capacities and lower operational complexity. In order to be really effective,

    Jan 1, 1999

  • SME
    61st Iteration of MINExpo Upbeat, Optimistic

    By Tim O’Neil

    “America’s mining industry brings good jobs to communities across America and provides the energy, minerals and equipment that are vital to our economic security and our way of life.” That was the

    Jan 1, 2004

  • SME
    Mining Applications Of Small Disc Cutters

    By J. E. Friant

    Until 1956, drill and blast was the only way to excavate rock. In that year, a tunneling machine using disc type cutters economically bored a small Toronto tunnel. Its amazing 105 ft/day set a new w

    Jan 1, 2002

  • SME
    Pillar And Roof Bolting Design Under Conditions Of Weak Roof And Multi-Seam Interaction - A Case Study

    By Y. Q. Zhang, S. S. Peng

    Numerical modeling was used to design the pillars and bolting plan for a mine with weak roof and multi-seam stress condition. Previous mining experience, pillar/roof yielding and in-situ horizontal st

    Jan 1, 2004

  • SME
    Multimedia Training Applications In The Mining Industry

    By M. Karmis, S. K. Weisiger

    The traditional method for training personnel in the mining and other heavy industries has been face-to-face, either via a lecturer in a classroom or through an apprenticeship. With the advent of appl

    Jan 1, 2001

  • SME
    Practical Geostatistics At Newmont Gold: A Story Of Adaptation

    Newmont Gold&apos;s methods for deposit modeling vary, depending on geology, mining and processing methods, economic feasibility and availability of historical information. It is argued that successfu

    Jan 1, 1998

  • SME
    The Application Of Cathodoluminescence Microscopy To The Study Of Carbonatite-Related Fluorspar Ores, Host Rock Carbonatites, And Beneficiation Products At Okorusu, Namibia

    By R. D. Hagni, P. A. Shivdasan

    Cathodoluminescence microscopy (CLM) is uniquely applicable to the study of carbonatite-related fluorspar ore deposits. The mineralogy of the carbonatites, sodic and potassic fenites, marbles, quartz

    Jan 1, 2001

  • SME
    Current State Of Disc Cutter Design And Development Directions

    By Joe Roby

    Rolling disc cutters are the business end of hard-rock and mixed-face tunnel boring machines (TBMs). Since their first successful employment on a TBM more than 50 years ago, disc cutter technology ha

    Jan 1, 2009

  • SME
    Piedras Verdes: Mexico?s Newest Copper Mine

    By P. J. Rua

    The Piedras Verdes copper mine is a new run-of-mine (ROM), heap leach, solvent-extraction/electrowinning (SX-EW) operation located 21 km (13 miles) north-northwest of the town of Alamos in the state o

    Jan 1, 2008

  • SME
    Clay Binder Enhanced Extraction Of Bitumen From Canadian Oil Sand

    A clay binding agent has been investigated to enhance flotation recovery of bitumen from Canadian high fines oil sand in the Clark Hot Water Extraction (CHWE) process. Selective adsorption on fine par

    Jan 1, 2012

  • SME
    Field Application of NTH Fracture Classification at the Second Manapouri Tailrace Tunnel, New Zealand

    By Don F. Macfarlane

    This paper describes the field application of the NTH fracture classification to rock encountered in the construction of the 9.6 km long, 10m diameter, Second Manapouri Tailrace Tunnel. Excavation of

    Jan 1, 2008

  • SME
    Copper Heap Leach Pad Performance: Geotechnical Lessons Learned Evaluation Of Several Heaps After 3 Plus Years Of Service

    By C. J. Burkhalter, H. Andrade, T. C. A. Gardner, J. P. Campbell

    During the 1990’s several copper heap leach facilities treating crushed and agglomerated oxide and sulfide ore were constructed in South America. The majority of these facilities have been in operatio

    Jan 1, 2002

  • SME
    Tunneling at Hollywood Reservoir

    By D. Olsen, S. Cole, J. Strid, G. Colzani

    This paper focuses on the underground tunnel work at the Hollywood Water Quality Improvement Project (HWQIP) in Los Angeles, CA. The HWQIP is being constructed to provide a water distribution system t

    Jan 1, 2001