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  • SME
    TECHNICAL CONSIDERATIONS FOR CONTROLLlNG FUGITIVE DUST EMISSIONS IN ORE HANDLING SYSTEMS

    By T. W. Mattioli

    Restrictions on fugitive emissions and crushing operations continue to get tighter. Although fugitive dust control in the gold mining industry has historically been difficult, there are now several op

    Jan 1, 1998

  • SME
    NEW IDEAS IN HlGH INTENSTIY AUTOGENOUS GRINDING

    By Bryan A. Bartley

    High intensity, autogenous grinding has been developed in the hard rock, quarry industry and is finding wide application in mineral processing. The autogenous vertical shaft impactor is described and

    Jan 1, 1998

  • SME
    HEAP LEACIIlNG SEMI-REFRACTORY MATERIALS AT GETCHELL, NEVADA

    By Allan Neal, Jess W. Smith

    FirstMiss Gold Inc., formerly FRM Minerals, Inc., is heap leaching gold from difficult, low grade ores at the Getchell Gold Mine in Humboldt County, Nevada. A two-thousand ton per day facility is leac

    Jan 1, 1998

  • SME
    DEMONSTRATION OF GEOCOATrM HEAP BIOOXIDATION PROCESS AT THE TRES AMIGOS MINE

    By Richard Crowell, James Gillaspie

    A concentrate biooxidation process was successfully demon­strated in the field in a remote part of northwestern Mexico. A 275 tonne (300 st) biooxidation heap was constructed using GeoBiotics' propri

    Jan 1, 1998

  • SME
    INNOVATIVE TECHNOLOGYAND PROSPECTS OFGOLD AND SILVERRECOVERY FROM Au-Ag BEARING CALCINES, RESIDUES AND TAILINGS

    By Peng Yu-mei, Cao Zhi-yun, Fan Qing-en

    In China, an enormous amount of Au-Ag bering calcines, residues and tailings are produced each year from various sources in mining, metallurgical and chemical industries. For a long time, these materi

    Jan 1, 1998

  • SME
    HEAP LEACHlNG: KEEP IT SIMPLE

    By Thomas J. DeMull

    Heap leaching was introduced to the precious metals mining industry approximately two decades ago as a simple, low cost method for recovering gold and silver from ores. Since that time, operational ex

    Jan 1, 1998

  • SME
    EM1ERGING REGULATORY DEVELOPMENTS lN THE USA AND THEIR IMPLICATIONS FOR POND/PAD LINER SELECTION

    By Rick T. Richins

    Despite what may be overwhelming evidence that natural degradation of cyanide and cyanide attenuation in hydrogeochemical processes are capable of reducing or eliminating potential water quality probl

    Jan 1, 1998

  • SME
    Dense Sludge Process For Reduced AMD Sludge Disposal (PREPRINT 98-42)

    By R. L. Zick

    The High Density Sludge Process was originally developed by Bethlehem Steel Corporation for use on acid mine drainage and diluted waste pickle liquor discharges requiring continuous chemical treatment

    Jan 1, 1998

  • SAIMM
    Annual Financial Statements ? Report Of The Independent Auditors

    To the members of The South African Institute of Mining and Metallurgy We have audited the annual financial statements set out on pages 251 to 257. These financial statements are the responsibility

    Jan 1, 1998

  • SME
    Application Of The Coal Mine Roof Rating (CMRR) To Extended Cuts

    Since it was first introduced, the Coal Mine Roof Rating (CMRR) has been widely accepted as a tool for geologic characterization and mine planning. This paper discusses the application of the CMRR to

    Jan 1, 1998

  • DFI
  • AUSIMM
    A Preliminary Investigation into Electro-Strengthening of Tailings for Surface and Underground Disposal

    By Chappell B

    Backfill in the form of mine waste tailings has inherent problems associated with attaining adequate strengths upon placement. Fines are usually removed to ensure adequate drainage, which lowers the

    Jan 1, 1998

  • AUSIMM
    Drainage Research at Mount Isa Mines Limited 1992 - 1997

    By Chend J

    Research conducted into backfill drainage at Mount Isa Mines since 1992 is described. Piping in draining backfilled scopes has been the primary cause of bulkhead failures and emphasis is placed on r

    Jan 1, 1998

  • SME
    The Good, The Bad, And The Ugly" Silica-Its Biology And Physiology

    By E. A. Metz

    Silicon dioxide, silica, is the most common oxide in the earth' s crust. The health effects of silicon dioxide dust have been known since Biblical times. Agricola's book, published in the mi

    Jan 1, 1998

  • SME
    Dynamic Temperature Measurement Of Overheated Shuttle Car Trailing Cables In Underground Coal Mines (PREPRINT 98-21)

    By P. G. Kovalchik

    Recent research conducted by NIOSH, Pittsburgh Research Laboratory showed that electrical current levels permitted under present regulations may not limit cable temperatures to less than 90°C in reele

    Jan 1, 1998

  • TMS
    Cyanide Control In The Metallurgical Process Of Gold Extraction In Anglogold (S.A.) (ADDENDUM)

    By B. J. Vorster

    AngloGold South Africa region currently consists of 12 Gold Plants. These plants use a combined total of $20 million of cyanide per annum. Of this, the .major portion (60%) is consumed at two Ergo dum

    Jan 1, 1998

  • CIM
    Application of Mineral Processing Techniques to the Recycling of Wastepaper

    By Gunther F. Leichtle, James A. Finch, Colin A. Hardie, Cesar O. Gomez

    "The recycling of wastepaper has become an important and common process worldwide. Techniques similar to those used in the mineral processing industry are used to produce high quality recycled fibers

    Jan 1, 1998

  • SME
    A Passive Means To Detect Hot Trolley Insulators

    By M. R. Yenchek

    Faulty insulators on mine trolley/track haulageways may allow the flow of leakage currents into the mine roof and ultimately result in combustion of the local roof material. The National Institute for

    Jan 1, 1998

  • SME-ICGCM
    Advances in Remote Sensing Techniques for Monitoring Rock Falls and Slope Failures (17th CONFERENCE ON GROUND CONTROL IN MINING)

    By J. M. Girard

    Ground control problems at surface mining operations can occur for a variety of reasons. Stress, gravity loading, rock strength, geology, pore pressure, weather effects, underground workings, and many

    Jan 1, 1998

  • SME
    Discussion - Grade Estimation And Its Precision In Mineral Resources: The Jackknife Approach – Technical Papers, Mining Engineering, Vol. 48, No. 2, pp. 84-88 – Adisoma, G. S., Hester, M. G.

    By J. H. Tu

    The technical paper correctly points out that the kriging variance is not a good measure of the uncertainty of the estimated (i.e., kriged) value of individual blocks. The au thors claim that their pr

    Jan 1, 1998