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Managing Environmental And Economic Risk For Engineered SystemsBy 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
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Predicting Gold Recovery by GravityBy 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
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A Model For The Origin Of Hydrophobic ForceBy 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
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Comminution-Based Powders for Technical Ceramic ApplicationsBy 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
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The mass transport of slurry and solid in a laboratory overflow ball millBy 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
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Noncyanide leaching of an auriferous pyrite ore from EcuadorBy 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
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Fine Coal Treatment OptionsBy 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
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Riverside Badlands Tunnel, Inland Feeder Project: The Challenges Between Concept and CompletionBy 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
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Exploration Computer Applications To Primary Dispersion Halos: Kougarok Tin Prospect, Seward Peninsula, Alaska, USABy 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
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Alluvial Gold Backhoe Plants In New ZealandBy 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
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Genetic Algorithms For Controller Training: Effects Of Population Size On Training Accuracy And EfficiencyBy 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
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Aboveground Testing Of Three Coal Mine Face Ventilation SystemsBy 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
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The Airside Road Tunnel, Heathrow Airport, EnglandBy 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
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Comparing the Estimates Obtained from Ordinary and Robust KrigingBy 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
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Leadership vs. management: Observations on the successes and failures of cost-reduction programsBy 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
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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
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The Financing of Gold Mine DevelopmentBy 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
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Long Distance Slurry TransportationBy 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
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The Influence of Frother Structure on Industrial Coal FlotationBy 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
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The Application Of Spatial Factor Analysis To Unconditional Simulations With Implications For Mineral ExplorationBy 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