A new tool in financial decision-making under uncertainty

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Texte
Sommaire: During hard times, the focus on tax issues makes a slight change in direction. Mining companies contemplate the tax treatment of transactions and circumstances which are the product of a difficult financial environment. Some of these issues are discussed in this month's edition of Tax Notes.
Publication: CIM Bulletin
Auteur(s): Robert B. Parsons
Numéro: 968
Volume: 86
Année: 1993
Texte
Sommaire: This paper describes some recent research done at CANMET in the areas of ion exchange and AYR (Acidification-Volatilization-Reneutraliwtion), as applied to the recovery of gold and cyanide, respectively. It also discusses the ways in which these two technologies may be combined in order to minimize the environmental impact of gold milling operations and optimize reagent usage.
Publication: CIM Bulletin
Auteur(s): P.A. Riveros, R.E. Molnar, V.M. McNamara
Mots clés: Milling, Gold milling operations, Research and development, Ion exchange, Addffican'on-Volatilization-Reneutralization (AYR), Environmental concerns, Metallocyanide complexes.
Numéro: 968
Volume: 86
Année: 1993
Texte
Sommaire: A full-scale demonstration unit of Tampella's LIFAC desulphur-ization process was tested at SaskPower's Poplar River Power Station Unit No. 1. The test program included a series of parametric tests, followed by a 1500-hour operational evaluation. This paper summarizes the results of the test program, and SaskPower's economic evaluation which led to selection of the LIFAC process for SaskPower's 300 MW Shand power station.
Publication: CIM Bulletin
Auteur(s): M.E. Ball
Mots clés: Acid rain, Pollution, Environmental controls, LIFAC.
Numéro: 968
Volume: 86
Année: 1993
Texte
Sommaire: Syncrude Canada Ltd. operates one of the largest surface mines in the world. The mining operation has two distinct phases: (1) the removal of the overburden, utilizing trucks and shovels; and (2) the mining ofoilsand with draglines and buck-etwheels. Both phases combined move approximately 330 000 BCM per day.
In support of current production demands and to provide a contingent oilsand source, Syncrude has developed an Auxiliary Production System (APS) supported by the truck and shovel...
Publication: CIM Bulletin
Auteur(s): J. MacNeil
Mots clés: Equipment, Oilsands, Mine development, Syncrude, Truck and shovel oilsands mine.
Numéro: 968
Volume: 86
Année: 1993
Texte
Sommaire: Current practice in advanced materials processing has involved the dispersion of a second-phase, commonly SiC, glass, or other non-metallic fibres/whiskers/particulates to enhance physical characteristics of the matrix. These matrices may be either ceramic or metallic but in either case it is important that the physical and chemical properties of each phase be compatible. The dispersed, finely-divided second phase is often both expensive and foreign-produced and may exhibit chemical instabili...
Publication: CIM Bulletin
Auteur(s): W.F. Caley, G.J. Kipouros, P.W. Kingston
Mots clés: Industrial minerals, Ceramics, Metal-matrix components, Composites.
Numéro: 968
Volume: 86
Année: 1993
Texte
Sommaire: Large-diameter flotation columns are subject to severe axial mixing which has reduced column recovery and has generally limited it to cleaner applications. It has been assumed that columns with diameter greater than 1 m should be baffled to reduce axial mixing, but little work has been reported quantifying the effectiveness of baffling. Tests were done on a 0.2m by 2m column fitted with baffles of different geometry. It was generally found that the inclusion of baffles in the column worsened...
Publication: CIM Bulletin
Auteur(s): M.H. Moys, J.A. Engelbrecht, A.N. Terblanche
Mots clés: Column flotation, Mineral processing, Flotation.
Numéro: 968
Volume: 86
Année: 1993
Texte
Sommaire: There are more than 300 occurrences of fluorite in Canada. Deposits of economic significance, however, are confined to Newfoundland and Nova Scotia in eastern Canada, Ontario in central Canada, and British Columbia in western Canada. Fluorite has been mined and processed intermittently in Ontario and Newfoundland until November 1990, when Canada's only producer Minworth Ltd., a U.K. based company, with a mine and concentrator near St. Lawrence on the Burin Peninsula, Newfoundland, closed its...
Publication: CIM Bulletin
Auteur(s): P.R.A. Andrews, R.K. Collings
Mots clés: Fluorite, Industrial minerals, Mineral processing, CFCs.
Numéro: 968
Volume: 86
Année: 1993
Texte
Sommaire: The successful marketing of Alberta coals will increasingly depend, to a large degree, on an extensive coal quality information base. This information, at present, is generally based on a deliverable, cleaned coal and is confined to existing minesites. Coal quality information is not as well understood for raw in situ coal outside of minesites and even less is known about the geological factors that control it.
If new uses and markets for Alberta coal are to be developed, such as gasification...
Publication: CIM Bulletin
Auteur(s): D.E. Macdonald, C.W. Langenberg, R.S. Strobl
Mots clés: Coal quality, In-seam variations, Alberta, Coal utilization.
Numéro: 968
Volume: 86
Année: 1993
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