Truck-haulage economics of mining open pits by high bench

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Mots clés : Open pit mining;Haulage;Modelling;Bench height
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Sommaire: The in pit dam construction and utilities relocation, known as the East Mine Corridor Relocation (EMCR) project, was developed to extend the life of the east side of the Base Mine pit by two years. This will result in the recovery of an additional 80 million barrels of oil and delay expenditures associated with the opening of the North Mine by two years. To accomplish this, a large in pit earth structure was required to provide a new embankment foundation for relocating a public highway, four...
Publication: CIM Bulletin
Auteur(s): Leo Piciacchia, John MacNeil, Robert Cameron, Colin Ashton
Mots clés: Open pit mining, Dam construction, Syncrude Canada Ltd.
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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