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Heap Leach Project Evaluation Precious Metal Heap Leach Design and Practice Daniel W. Kappes Observations on Recent Successes and Problems in Heap Leaching A paper presented at The Fourth International Gold Symposium, Lima, Peru, May 2000
Daniel W. Kappes, President, Kappes, Cassiday & Associates
Randall A. Pyper, General Manager, Kappes, Cassiday & Associates Australia
David J. Collins, General Manager, Kappes, Cassiday Peru The Ashanti (Ghana) Heap Leach - Treatment of a Decomposed Schist in a Tropical Environment A paper presented at World Gold '91, Cairns, Queensland, Australia
M. W. Cassiday, T. J. Cox, Kappes, Cassiday & Associates
I. A. Domfeh, Ian Stalker, B. M. Jaczkowski, Ashanti Goldfields Heap Leach with Fine Grinding and Agglomeration at Potosi - Bolivia A paper presented at GoldTECH 4, September 10-12, 1990 Reno, Nevada
W. Robert Rose and Randall Pyper of Kappes, Cassiday & Associates
Jaime Eguivar and Carlos Mirabal of Compania Minera del Sur S.A. CSI's Modular Plant for the On-Site Manufacture of Cyanide A paper presented at The Randol Gold Conference, November 1989, Sacramento, California
Daniel W. Kappes Laboratory Heap Leach Testing Comparison of Small and Large Scale Tests A paper presented at The Workshop Conference on Economics and Practice of Heap Leaching in Gold Mining in Cairns, Queensland, Australia, 3-6 August 1988
Russell B. Dix Technical Advances in Precious Metals Heap Leaching A paper presented at The Workshop Conference on Economics and Practice of Heap Leaching in Gold Mining in Cairns, Queensland, Australia, 3-6 August 1988
Daniel W. Kappes Marvel Loch Gold Mines Exhibition Heap Leach Project A paper presented at The Workshop Conference on Economics and Practice of Heap Leaching in Gold Mining in Cairns, Queensland, Australia, 3-6 August 1988
Randall Pyper and Alan Pangbourne Comparison of Vat and Heap Leaching Behavior in Laboratory Evaluations of Gold/Silver Ores A paper presented at the Perth International Gold Silver Conference, Perth, Western Australia, 28-30 October 1988
Russell B. Dix and Randall Pyper Development of the Hog Ranch Mine, Washoe County, Nevada A discussion presented at the April meeting of the Northern Nevada Section of AIME, 10 April 1987
Geoff Allard, Kappes, Cassiday & Associates and Naseem Mian, Kim Drossulis, and Ken Smith, Western Hog Ranch Company Small and Large Heap Leaches - Differences in Approach A talk for presentation at the CIM District 6 meeting, Victoria, B.C. 3 October 1986
Randall Pyper and Daniel W. Kappes
Reasons for use in Heap Leaching, Economics of Large vs. Small Projects. New Developments in Heap Leaching A paper presented at the Gold & Silver Recovery Forum 85 in Santa Fe, New Mexico, 14 October 1985
Daniel W. Kappes
Discussion of upgraded techniques, climatic considerations. Considerations in the Choice of Carbon Adsorption Systems for Gold Heap Leaching A paper presented at the First International Symposium on Precious Metals Recovery in Reno, Nevada, June 10-14, 1984
Randall Pyper and S. G. Allard
Comparisons of cascading and closed-top tank systems and tower adsorption columns. Sterling Mine Joint Venture - Anatomy of a Small Underground Mine and Heap Leach By Daniel W. Kappes, Irwin S. Parrish, and Gregory G. Austin, February 1982 Scaleup Experience in Gold-Silver Heap Leaching A talk for presentation to the AIME Annual Meeting, Chicago, Illinois, February 1981 by Daniel W. Kappes Precious Metals Heap Leaching: Simple - Why not Successful? A talk for presentation to the Northwest Mining Assn., December 7, 1979
Daniel W. Kappes
Technical and financial reasons for potential failures of heap leach projects. Leaching of Small Gold & Silver Deposits Presented at the Small Scale Mining of the World Conference in Jurica, Qro., Mexico, November 1978
Daniel W. Kappes
Introduction to heap leaching with approximate costs (in 1978) Chloride Leaching for Silver, Copper, Lead, and Antimony - Industrial Experience in the 600 Tonne/Day Itos, Bolivia Plant Presented at Chloride Metallurgy 2002
Presented at CIM - Montreal, October 2002
Daniel W. Kappes Heap Leach or Mill? Economic Considerations in a Period of Stable Gold Prices Presented at the Randol Gold Conference, April 1998
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