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  • SME
    Managing Environmental And Economic Risk For Engineered Systems

    By William S. Eaton

    Managing a mine or mineral processing operation in today's environment presents many unique challenges to mining companies. In recent years, headlines around the world have publicized major in

    Jan 1, 1997

  • SME
    Predicting Gold Recovery by Gravity

    By F. Vincent, A. Boulet, M. Noaparast, F. Woodcock, A. R. Laplante

    A novel methodology to estimate gold recovery by gravity is presented. It makes use of a population balance model which represents gold liberation, breakage and classification behaviour and applies pr

    Jan 1, 1995

  • SME
    A Model For The Origin Of Hydrophobic Force

    By R. Pazhianur

    Many investigators conducted surface force measurements between hydrophobic surfaces in water, and observed attractive force that was substantially stronger than the van der Waals attractive force. T

    Jan 1, 2003

  • SME
    Comminution-Based Powders for Technical Ceramic Applications

    By K. S. Narayanan, Marcia L. Bartges, K. S. Venkataraman

    The starting powders' physicochemical properties and consistency are essential for technical ceramic products to meet their performance specifications. The need for finer and more consistent powd

    Jan 1, 1992

  • SME
    The mass transport of slurry and solid in a laboratory overflow ball mill

    By R. Hogg, L. G. Austin, R. C. Klimpel

    Slurry densities and holdup were measured for open circuit grinding tests in a laboratory overflow ball mill of 0.3 m diam by 0.6 m long, by emptying and drying after stoppage of the mill. Contrary to

    Jan 1, 1990

  • SME
    Noncyanide leaching of an auriferous pyrite ore from Ecuador

    By G. A. Munoz, J. D. Miller

    Gold leaching of an auriferous pyrite ore from the Portovelo deposit in Ecuador indicates that noncyanide leaching systems, such as thiocyanate and thiourea, are not as effective as the traditional cy

    Jan 1, 2000

  • SME
    Fine Coal Treatment Options

    By S. K. Nicol

    Flotation, water-washing cyclones (hydrocyclones) and spiral concentrators are the three process units most commonly utilised in fine coal preparation. The results of testwork conducted on these three

    Jan 1, 1986

  • SME
    Riverside Badlands Tunnel, Inland Feeder Project: The Challenges Between Concept and Completion

    By John Waggoner, Steve Klein, John Townsend, Jay Arabshahi

    The Riverside Badlands Tunnel is a 13 km (8 mile) long segment of the Inland Feeder Project. This 3.65 m (12 ft) finished diameter water tunnel presented many challenges that had to be overcome to tak

    Jan 1, 2003

  • SME
    Exploration Computer Applications To Primary Dispersion Halos: Kougarok Tin Prospect, Seward Peninsula, Alaska, USA

    By Jeffrey C. Reid

    Computer processing and high resolution graphics display of geochemical data were used to quickly, accurately, and efficiently obtain impor¬tant decision-making information for tin (cassiterite) explo

    Jan 1, 1989

  • SME
    Alluvial Gold Backhoe Plants In New Zealand

    By John C. Braithwaite

    Gold production commenced in New Zealand during the gold rush of 1861, and recovery to date is over 900 tonnes, almost 60% of which was alluvial. New Zealand pioneered development of bucket line dredg

    Jan 1, 1989

  • SME
    Genetic Algorithms For Controller Training: Effects Of Population Size On Training Accuracy And Efficiency

    By W. F. Hahnert, P. A. S. Ralston

    In off-line training of a rule-based controller, the significant measure of successful training is the quality of control provided by the generated rule set. In an adaptive or on-line control environm

    Jan 1, 1993

  • SME
    Aboveground Testing Of Three Coal Mine Face Ventilation Systems

    By N. S. Tanious

    Three water-spray ventilation systems were tested to determine their effectiveness in diluting methane at a room and pillar coal mine face. These systems were: the shrouded nozzle, the spray fan, and

    Jan 1, 1987

  • SME
    The Airside Road Tunnel, Heathrow Airport, England

    By Arthur W. Darby

    Heathrow Airport is owned and operated by BAA who are engaged in a major programme of expansion. In order to link the expansion of the airport in the west with the existing central terminal area, a tw

    Jan 1, 2003

  • SME
    Comparing the Estimates Obtained from Ordinary and Robust Kriging

    By J. Felipe Costa, Andrew H. White, Marcot T. M. B. Vilhena

    Ordinary kriiing (OK) is an interpolation algorithm mostly used in earth sciences applications where it provides satisfactory results. Robust kriging (RK) is an alternative algorithm which at- tempts

    Jan 1, 1996

  • SME
    Leadership vs. management: Observations on the successes and failures of cost-reduction programs

    By B. Cavender

    Mining managers trying to rapidly reduce production costs tend to implement a traditional set of topdown managerial practices: reductions in production volume, employee layoffs, renegotiation of suppl

    Jan 1, 2002

  • SME
    Increased Production And Cost Savings Using Delvo Stabilizer In The Cemented Rockfill Program At Williams Mine (Marathon)

    By Scott Jones, Tony R. A. Durkac, David W. Stephens

    Williams Mine was considering spending a large amount of capital to install a pumping system underground to rid the mine of slimes; with the introduction of Delvo Stabilizer this challenge would be me

    Jan 1, 2001

  • SME
    The Financing of Gold Mine Development

    By Michael C. Newbury

    For thousands of years gold has been not only a commodity, valued for its comparative scarceness, immutability and homogeneity but also a medium of exchange which has no nationality. Approximately 90%

    Jan 1, 1987

  • SME
    Long Distance Slurry Transportation

    By P. E. Snoek, R. L. Gandhi, C. S. Miller

    Slurry operations are an integral part of mineral processing. There is therefore reason to consider using slurry pipelines for long distance mineral transportation. This paper reviews the current stat

    Jan 1, 1986

  • SME
    The Influence of Frother Structure on Industrial Coal Flotation

    By Richard R. Klimpel

    This paper summarizes the author's laboratory and industrial experiences in designing and evaluating frothers for optimal coal flotation circuit performance. The key variables discussed are parti

    Jan 1, 1995

  • SME
    The Application Of Spatial Factor Analysis To Unconditional Simulations With Implications For Mineral Exploration

    By E. C. Grunsky

    Spatial auto- and crosscorrelation assessment of variables can be carried out using quadratic function estimates. From the function estimates, multivariate relationships of the variables can be determ

    Jan 1, 1989