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The end of horizontal zinc retorting in the United States
By J. E. Dutrizac
"The end of an era in zinc metallurgy took place on July 31, 1976 when the horizontal retort furnaces of the National Zinc Company in Bartlesville, Oklahoma were permanently shut down (1) . For more t
Jan 1, 1999
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Mucking efficiency in open pit blasting
By J. J. Montoro
The influence of blasting on the excavators’ efficiency, defined as mucking rate (amount of rock mucked per unit time) and mean bucket load (amount of rock loaded in each bucket operation), is investi
Jan 1, 2007
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Diplomat Mine
By J. Keith Haddock
"Introduction The Luscar company, Forestburg Collieries Ltd., operates the Diplomat Mine located 14 km south of Forestburg, Alberta. Production is now at a declining rate from the 1 million tonnes ach
Jan 1, 1985
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Precious-metal-bearing Volcanogenic Massive Sulfide Deposits, Campo Morado, Guerrero, Mexico
By Mark Rebagliati, John Payne, Jim Oliver
Abstract-The Campo Morado precious-metal-bearing, volcanogenic massive sulfide deposits occur in a lower Cretaceous, bimodal, calc-alkaline volcanic sequence in a major northerly trending belt in the
Jan 1, 1997
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Precious-metal-bearing Volcanogenic Massive Sulfide Deposits, Campo Morado, Guerrero,Mexico (63b48013-4318-466b-b2d9-966e31151f49)
By Mark Rebagliati, John Payne, Jim Oliver
The Campo Morado precious-metal-bearing, volcanogenic massive sul?de deposits occurin a lower Cretaceous, bimodal, calc-alkaline volcanic sequence in a major northerly trending belt inthe Guerrero Ter
Jan 1, 1997
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Une mine à ciel ouvert et le déménagement d?un quartier : l?expérience de la Corporation minière Osisko à Malartic, Québec
By Julien Rivard
Au printemps 2011, la Corporation minière Osisko met en production le gisement Canadian Malartic, qui devient la plus importante mine d?or à ciel ouvert au Canada. Pour lui faire place, elle a déménag
May 1, 2011
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Continuous Improvements of Porcupine Joint Venture (PJV) Dome Mine's Gravity Circuit
By T. Y. Chong, J. A. Folinsbee, M. Fullam
PJV Dome Mine has used some form of gravity concentration since start of milling operation in 1909 to recover free milling gold. Amalgamation and conventional jigs were first used and were replaced wi
Jan 1, 2005
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Preliminary Environmental Modelling of Effluent Nitrogen Species Concentrations for Feasibility Level Open Pit Mine Projects
By Catherine T. Ziten
Introduction ?Environmental assessments required for permitting ?Focus on ammonia produced through mine construction & blasting ?Water quality guidelines: federal, provincial, IGO ?Reported values
May 1, 2009
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Evaluating the Effect of Seeding on Zinc Recovery through the Zincor Iron Removal Circuit
By Jochen Petersen, Diane Taggart
"At an average of 90.3% (for the period of 1 January 2009 to 30 September 2011), Zincor’s zinc recovery was well below the industry standard of 96%. The losses through the residues, in particular the
Jan 1, 2016
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Lead Bead Method of Spectrographic Analysis of Platinum Metals, Gold, Silver, and Bismuth 1n Sulphide and Uranium Ores
By J. E. Hawley, Y. Rimsaite, T. V. Lord
"IntroductionIN THE COURSE of. a spectrographic investigation of the platinum metal .content of various minerals in sulphide ores, the use of • fire-assay beads dissolved in gold-amalgam ( 1) was foun
Jan 1, 1953
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Grain Refinement and Augmented Rate in Transformation of Hot Worked Austenite
By E. V. Konopleva, H. J. McQueen, V. M. Khlestov
In addition to increasing grain boundary area during hot working of austenite, the dislocation substructures create potential sites for nucleation of ferrite both at original grain boundaries and at t
Jan 1, 2004
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Processing Plant Expansion at Kittila Mine Affords Opportunity for Significant Material Handling Improvement
By T. Holmes, J. Middlemiss
"Agnico-Eagle (AE) has been operating their Kittila Mine in Northern Finland since 2008. The mine has experienced considerable ore flow problems with ratholing, bridging and freezing in their mill fee
Jan 1, 2017
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Developments and Trends in Mining in the Slovak Republic
By P. Cicmanec
Mining activities in the territory of Slovakia have a long history. Mining techniques have developed rapidly in the last centuries. This paper deals not only with mining history, but also with undergr
Aug 1, 2013
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Monitoring Canada's Mine Production
By H. L. Martin
A joint federal-provincial approach in gathering basic information from industry on mine production, concentrator operations and ore reserves, initiated during 1978, is a major step toward the goal of
Jan 1, 1979
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Gold Alloy Deformation Processed Metal - Metal Matrix Composite Wire
By Timothy W. Ellis
Wire Bonding is the dominant IC interconnection process presently used in the semiconductor assembly industry (1). The flexibility, adaptability and cost of wire bonding will continue to keep it as th
Oct 1, 2003
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Summary Of The EU Voluntary Copper Risk Assessment
By K. Delbeke
Within the framework of the EU Existing Substance (93/793/EEC) and REACH regulations EC/1907/2006), the copper industry initiated in 2000 a comprehensive Voluntary Risk Assessment of copper and severa
Jan 1, 2007
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Effect of Organic Compounds on Nickel Electrowinning
By N. H. J. Freire, D. Majuste
In this paper, the effects of some organic compounds on the current efficiency, cell voltage and specific energy consumption during nickel electrowinning, and on the deposit features (morphology, crys
Jan 1, 2016
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Innovative Perspectives on Effective Development Methods for Mining Processing Plants
By Thomas Glück
Established and emerging mining companies face significant challenges in managing their operations and projects. Outcomes often do not meet the expectations of all the stakeholders of particular devel
Jan 1, 2015
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Risk Adjusted Cash Flows: Discount Rates, Risk & Long Life Projects
By L. D. Smith
Net Present Value Impact of Discount Rate The Discounted Cash Flow (DCF) method of valuations is universally used and accepted. The main criticism of the method is that it does not recognize the val
May 1, 2013
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FreedomCAR and Casting
By J. A. Jr. Carpenter
Expanding world economic prosperity, probable peaking of conventional petroleum production in the coming decades and environmental concerns require efforts to increase the efficiency of, and the devel
Jan 1, 2006