Dam construction and utility corridor relocation in pit at Syncrude Canada Ltd.

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Mots clés : Open pit mining;Dam construction
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Texte
Sommaire: This paper reviews an analytical model that defines the relationship of weight-weighted or volume-weighted average haulage distance with bench height and other related parameters, presents the optimum bench heights under various conditions in terms of minimizing the weighted average haulage distance of ore/waste during the full lifetime of an open pit mine, and discusses the truck-haulage economics of mining open pits by high bench, specifically by 15 m, 18 m and 20 m benches through marginal...
Publication: CIM Bulletin
Auteur(s): Zhongxue Li
Mots clés: Open pit mining, Haulage, Modelling, Bench height, High bench.
Numéro: 993
Volume: 88
Année: 1995
Texte
Sommaire: Miller chlorides, which are a mixture of silver and copper chlorides, are produced when impure molten gold is refined with chlorine. Usually the copper and silver are recovered from the chlorides by a hydrometallurgical cementation process. However, this process is slow, requires considerable floor space, and generates waste water solutions which are not environmentally acceptable. In the present work, the pyrometallurgical reduction of the Miller chlorides was investigated according to the...
Publication: CIM Bulletin
Auteur(s): C.A. Pickles, J.M. Toguri, R.A. Bergman, J. Clark, H. Truong
Mots clés: Metallurgy, Miller chlorides, Pyrometallurgy, Metal recovery processes
Numéro: 993
Volume: 88
Année: 1995
Texte
Sommaire: Geostatistics has been widely accepted as a standard tool for reserve estimation and mine planning. Kriging has been adopted as the best estimator of grade. Although many discussions have been conducted in the use ofkriging in the mining industry, insufficient attention has been given to solutions for over-smoothing. This effect has been frequently encountered in many mines. The so-called over-smearing refers to two facts: (1) over-reduction of grade variabilities and (2) over-estimation of...
Publication: CIM Bulletin
Auteur(s): Guocheng Pan
Mots clés: Reserve estimation, Kriging, Variogram modeling, Search architecture, Smearing.
Numéro: 993
Volume: 88
Année: 1995
Texte
Sommaire: Omai Gold Mines Ltd. is the operator of a large-scale open pit gold mining operation located in Guyana, South America. Construction at the mine began in September 1991 and the process plant of a capacity of 12 000 tonnes per day reached commercial production in January 1993.
The remote location of the mine requires an extensive logistics support to ensure adequate material supplies. Over 60% of the consumables valued at US$35.0 million per year are supplied from North America.
One particular...
Publication: CIM Bulletin
Auteur(s): G.H. Veillette
Mots clés: Omai Gold Mines Limited, Gold mining, Mill design, Open pit mining.
Numéro: 993
Volume: 88
Année: 1995
Texte
Sommaire: With the implementation of more advanced monitoring, control and locating systems in surface mines, there is an ever increasing need for their mine-wide integration toward achieving over-all optimization. AQUILA Mining Systems Ltd. is developing the basis for a comprehensive real-time monitoring, control and information system called the Total Mining System or TMS. This system is being designed to address both current and future needs of open pit mines toward improving productivity and...
Publication: CIM Bulletin
Auteur(s): Jonathan Peck, Jim Gray
Mots clés: Automation, Open pit mining, Total Mining System.
Numéro: 993
Volume: 88
Année: 1995
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