Computer-based reserve estimation and grade control: practitioners' views

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Mots clés : Computer applications;Grade control;Ore reserve estimations
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Publication: CIM Bulletin
Auteur(s): J.C. Belanger, D.W.I. Griffiths
Mots clés: Maintenance engineering, Automation, Robotics.
Numéro: 942
Volume: 83
Année: 1990
Texte
Publication: CIM Bulletin
Auteur(s): G.R. Heffernan
Mots clés: Mineral economics, Steel.
Numéro: 942
Volume: 83
Année: 1990
Texte
Sommaire: Good belt conveyor design is the most often neglected detail in the engineering of a plant. This results in downtime from spills or jams and premature failure of equipment components. Careful layout and component selection will result in better operation, a cleaner plant and therefore lower maintenance costs.
Publication: CIM Bulletin
Auteur(s): D.A. Mackie, J.E. Rider
Mots clés: Maintenance/Engineering, Conveyors, Equipment design.
Numéro: 942
Volume: 83
Année: 1990
Texte
Sommaire: Significant strides have been made during the past decade to integrate the traditionally separate administrative functions of financial management, materials management and maintenance management.
In 1983, Key Lake Mining Corporation (KLMC) brought on-stream one of the most technologically advanced mining operations in North America. There was a requirement to support this new facility with state-of-the-art management information systems.
This paper will discuss the development and evolution...
Publication: CIM Bulletin
Auteur(s): T. Warren, R. Fender
Mots clés: Maintenance/Engineering, Computer applications, CAMECO Mining Division.
Numéro: 942
Volume: 83
Année: 1990
Texte
Sommaire: The Apex Mine is currently scheduled to be brought back into production by Hecla in the first quarter of 1990. Its projected productivity rate will be exceptionally high for a small underhand cut and fill mine.
The ore mined at the Apex Mine occurs within a pipe-like structure as a series of iron oxides containing both gallium and germanium, plus significant amounts of silver, zinc, lead, and copper.
Ground conditions in and around the ore zone have dictated that unique approaches be...
Publication: CIM Bulletin
Auteur(s): R.W. Guill
Mots clés: Underground mining, Mine development.
Numéro: 942
Volume: 83
Année: 1990
Texte
Sommaire: The current state of knowledge concerning pipeline transport of coal in water slurry form is summarized for the four categories: coal-water fuels, conventional fine coal slurries, coarse coals and stabilized mixtures of coarse and fine particles. Surface chemistry is of dominant importance for coal-water fuels and considerable progress in understanding the role of surf octants has been achieved in recent years. Little generalized research on the flow of conventional fine coal slurries has...
Publication: CIM Bulletin
Auteur(s): C.A. Shook, R.G. Gillies, W.H.W. Husband
Mots clés: Coal mining, Coal-water fuels, Slurries, Ore transport, Pipeline transportation.
Numéro: 942
Volume: 83
Année: 1990
Texte
Sommaire: A world-scale surface mining operation is associated with the Syncrude Oilsands Plant. Each day over 300 000 tonnes of oilsand are mined and transported to the process plant to produce 129 000 barrels of synthetic crude oil.
Examples of research and maintenance engineering programs which have resulted in substantial gains in dragline and bucketwheel conveyor system productivities are discussed. Two central themes within these programs, which go beyond the usual technical support associated...
Publication: CIM Bulletin
Auteur(s): D. Kershaw
Mots clés: Maintenance engineering, Equipment, Research and development, Oilsands, Conveyor belts, Syncrude.
Numéro: 942
Volume: 83
Année: 1990
Texte
Sommaire: Coal, as well as a large part of other minerals in Canada, is produced by surface mining methods. This has resulted in short-and long-term accumulation of waste rock in dumps. Two main problems arise from the flow of water through these dumps: stability of dumps and the impact on stream flows. In recent years, a number of mines have started placing waste rock in valleys for general disposal or for constructing mine access roadways. All these have created challenges in the following areas:...
Publication: CIM Bulletin
Auteur(s): B.M. Das, F. Claridge, V.K. Garga
Mots clés: Surface mining, Rock drains, Open pit mining.
Numéro: 942
Volume: 83
Année: 1990
Texte
Sommaire: A hoisting plant design should satisfy two basic requirements:1. to provide the necessary materials handling capacity, including ventilation where applicable, while meeting the requirements of good practice and, as a minimum, government regulation; and 2. to optimize the economics of the project.
Selection of hoisting equipment to meet the first objective is a complex but logical engineering process. The necessary calculations of payloads, accelerations, speeds, rope strength, hoist size, and...
Publication: CIM Bulletin
Auteur(s): J.R. Morris
Mots clés: Hoisting systems, Safety, Equipment, Shaft design.
Numéro: 942
Volume: 83
Année: 1990
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