Performance and Field Testing of the Service Brakes of Mining Trucks In B.C.

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Mots clés : Open-pit mining;Equipment;Maintenance;Brakes;Trucks;British Columbia;Stopping distances
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Texte
Sommaire: The paper describes the equipment in use, haulage grades, road conditions, tire sizes, tire performance and related problems. Various types of failures and causes, corrective action taken, tire records and reporting for control are also discussed.
Publication: CIM Bulletin
Auteur(s): Leon J. Perrier, Hubert J. Oliver
Mots clés: Open-pit mining, Tires, Steep Rock Iron Mines Ltd., Equipment, Trucks, Maintenance, Haulage roads.
Numéro: 783
Volume: 70
Année: 1977
Texte
Sommaire: A general review of recent philosophy and procedures for open-pit mine stability is presented.
Some improvements have been made in drilling technology and instrumentation to increase the accuracy of obtaining in-situation information on structural geology and groundwater. Recent improvements have been made in our understanding of blasting to reduce the influence of the seismic acceleration forces and gas pressures on the final design slopes.
A review of research needs and priorities is...
Publication: CIM Bulletin
Auteur(s): C. O. Brawner
Mots clés: Open-pit mining, Slope stability, Rock mechanics, Drilling, Blasting, Core recovery, Monitoring, Groundwater, Landslides.
Numéro: 783
Volume: 70
Année: 1977
Texte
Sommaire: Prior to November 1975, there were several failures of front-wheel spindles on large haulage trucks in B.C., attributed to fatigue cracks. Since that time, a nondestructive test program has succeeded in detecting the cracks before catastrophic failure. However, the author regards the failures as just one example of a general unreliability in large high-strength steel castings and urges the industry to look to forgings for sensitive components of heavy equipment.
Publication: CIM Bulletin
Auteur(s): R. T. Saxon
Mots clés: Open-pit mining, Equipment, Trucks, Spindles, Maintenance, Testing, Forgings.
Numéro: 783
Volume: 70
Année: 1977
Texte
Sommaire: For the first time in years, the spring budgets of federal and provincial governments have not brought down major new proposals affecting the tax burdens of the mining industry in Canada. It seems appropriate to use this unaccustomed period of tranquility to set out an extremely abbreviated summary of the principal features of the federal and provincial income and mining tax rules affecting the mining industry.
Publication: CIM Bulletin
Auteur(s): R. D. Brown
Numéro: 783
Volume: 70
Année: 1977
Texte
Sommaire: The management of solid waste is known to be a large and increasing problem in high-population areas throughout the world. It is not necessary here to add further definition to the nature and magnitude of the problem. Instead, it is the purpose of this paper to describe a new process, called the Andco-Torrax System,, which will be of use in converting municipal solid waste into useful energy forms and a granulated slag by-product. The paper includes a description of the first commercial plant...
Publication: CIM Bulletin
Auteur(s): P. E. Davidson
Mots clés: Andco-Torrax process, Pyrolysis, Waste management, Environmental control, Combustion processes, Energy recovery, Gas cleaning.
Numéro: 783
Volume: 70
Année: 1977
Texte
Sommaire: This report describes a pilot-scale study of a hydro-metallurgical process to treat high-grade nickel matte or a nickel-cobalt sulphide precipitate to produce high-purity electrolytic nickel. The first step of the process is the oxidative leaching of the nickel-bearing material by nitric acid; the nitrous gases generated during leaching are reconverted to nitric acid. The crude nickel sulphate-nitrate solution is purified and is then subjected to a denitrification step. Nitrate separation is...
Publication: CIM Bulletin
Auteur(s): P. Fossi, L. Gandon, C. Bozec, J. M. Demarthe
Mots clés: Hydrometallurgy, Electrowinning, Nickel sulphates, Nickel carbonates.
Numéro: 783
Volume: 70
Année: 1977
Texte
Sommaire: Current practices in electrolytic winning and refining of copper, nickel and zinc are reviewed from the point of view of their respective energy requirements. The electrical energy requirements of these processes are broken down into the individual components, which belong to two basic categories: (a) thermodynamic energy requirements (AG of the desired reaction); (b) energy losses (anode and cathode polarizations, ohmic drops in the electrolyte and in the cell hardware, energy losses due to...
Publication: CIM Bulletin
Auteur(s): V. A. Ettel
Mots clés: Hydrometallurgy, Copper refining, Electrowinning, Nickel refining, Zinc refining, Thermodynamic energy, Cathodic over potential, Anodic over-potential, Electrolytes, Aluminum refining.
Numéro: 783
Volume: 70
Année: 1977
Texte
Sommaire: This paper deals primarily with the different types of drilling methods used by the Iron Ore Company of Canada for sampling the soft and friable hematite-limonite (secondary) iron ore deposits found in the Schefferville area. The problems associated with drilling, sampling, sample handling and sample preparation for chemical analysis of these ores are discussed.
Systematic evaluation of the various drilling methods led to the selection of an integrated drilling system. This system consists of...
Publication: CIM Bulletin
Auteur(s): Raju S. Sagi
Mots clés: Drilling, Development drilling, Sampling, Iron Ore Company of Canada, Iron deposits, Diamond drilling, Chop-and-drive drilling, Eotary drilling, Mud drilling, Wireline coring, Tricones, Sample splitters, Dewatering.
Numéro: 783
Volume: 70
Année: 1977
Texte
Sommaire: Geolog is a computer-oriented technique for recording and interpreting geological field observations (particularly with respect to drill core and cuttings) for various kinds of mineral deposits. The modification of the general system, for application to coal and other sedimentary deposits is presented here. This stratigraphic version has been tested by a successful application to the description and interpretation of data from 15 drill holes totaling 14,600 feet (4,450 meters) on a coal-beari...
Publication: CIM Bulletin
Auteur(s): C. I. Godwin, R. E. Hindson, P. H. Blanchet
Mots clés: Geolog, Stratigraphy, Drilling, Exploration, Coal deposits, Computers, Peace River area, Sedimentary rocks, Data gathering, Logging.
Numéro: 783
Volume: 70
Année: 1977
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