Traffic lights at mines Gaspe underground operations

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Mots clés : Underground mining;Traffic;Safety
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Publication: CIM Bulletin
Auteur(s): GERRY ROBLESKY
Mots clés: Computer applications, Maintenance, Microcomputers, Mine management.
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: This paper provides an overview of the use of uranium and coal in Ontario Hydro's generation program. The dynamics of available supply sources including mining and transportation infrastructures and regional considerations are described. Included is a discussion of needed procurement strategies, both in place and planned, to meet fluctuating fuel requirements while ensuring adequate supply security and cost effectiveness.
Publication: CIM Bulletin
Auteur(s): ALAN R. HOLT
Mots clés: Energy requirements, Ontario Hydro, Coal, Uranium, Supply and demand, Transportation.
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: The non-ferrous pyrometatlurgical industry has been under extreme pressure since 1980 and significant changes are taking place, principally in the copper, nickel and lead industries.
This paper reviews some of these changes, particularly with respect to smelter capacity, major technical trends, and the industry's response to increased energy costs and environmental constraints.
The Canadian metal mineral production for 1985 has been estimated at a value of over $8 billion, of which half is...
Publication: CIM Bulletin
Auteur(s): JOHN C. TAYLOR
Mots clés: Pyrometallurgy, Smelting processes, Laterite ores, Mineral economics, Energy, Copper, Nickel, Process development.
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: The objective of the laboratory work described in this paper has been to develop a method for producing small gas bubbles at moderate to high gas rates in a flotation column. Small bubbles are particularly important for attaining reasonable flotation rates of fine particles. An ultrasonic aerosol generator has been employed to add frother solution directly to the gas stream. Using porous glass and filter cloth spargers, aerosol frother addition has produced bubbles at l/2 to 2/s the diameter...
Publication: CIM Bulletin
Auteur(s): I.M. FLINT P. MacPHAIL, G.S. DOBBY
Mots clés: Flotation, Frothers, Spargers, Fine particles, Flotation column, Mineral Processing.
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: In January 1981, Quintette Coal Limited (QCL) signed a 20-year coking coal sales agreement with the Japanese Steel Industry which was followed by the commencement of mining operations in October 1982 and preparation plant operation in November 1983. During the mine's startup, the town of Tumbler Ridge, the Anzac rail spur line, coal port facilities at Ridley Island plus numerous related elements of infrastructure were completed to support QCL and the neighbouring Bullmose operation in...
Publication: CIM Bulletin
Auteur(s): W.F. MOORE
Mots clés: Quintette Coal Limited, Coal, History, Construction.
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: This paper will discuss the application of tools and the evolution of computer-assisted procedures in the production planning process at Quintette Coal Limited (QCL). In 1986, QCL produced 5.3 Mt of clean coal from their surface mining operation located in northeastern British Columbia. The structural complexity of the sedimentary deposit and high rate of mining necessitate the consideration of large amounts of geological information which continually updates the interpretation. There are...
Publication: CIM Bulletin
Auteur(s): J.W. HENDRY
Mots clés: Quintette Coal Limited, Coal Mining, Mine production, Computer applications, Modelling
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: Early in mine development at Quintette Coal Limited major problems were encountered with the fleets of primary equipment which seriously hampered production. These major fleets (cable shovels, hydraulic shovels, hydraulic drills and electric trucks) have consequently been the focal point of maintenance efforts. Some were prototypes in the Canadian mining scene and brought with them new concerns to test their skills. The problems were studied and the category and areas which were having the...
Publication: CIM Bulletin
Auteur(s): W.D. WATSON
Mots clés: Coal mining, Quintette Coal Limited, Equipment, Maintenance.
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: The coal industry is an important part of Canada's economy — as an energy source, employer, and generator of export earnings. Coal comprises 71 % of our fossil energy and with rapidly advancing handling and burning technology will clearly play a major role in our national energy mix, eventually as synthetic gases and liquids.
International coal markets are very competitive and Canada is disadvantaged by long rail hauls to port, and a heavy tax burden. However, high mine productivity has...
Publication: CIM Bulletin
Auteur(s): G. CAPOBIANCO
Mots clés: Coal, Economics, Energy, Power generation, Mineral economics, Coal markets, Coal production.
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: Various methods of leaching are being used by Denison Mines Ltd. Uranium Operations. This study was designed to investigate the flood leaching operation of two parallel inter-connected stopes contained by pressure bulkheads. The leaching muck piles, created from large scale uppers production blasts, are aerated by compressed air lines laid beneath the pile prior to blasting.
A SF6 tracer gas, injection technique has been employed to determine the post-blast integrity of the single-ended air...
Publication: CIM Bulletin
Auteur(s): S. HARDCASTLE, A. SHEIKH
Mots clés: Ventilation, Tracer gas, Leaching, Mining technology, Underground mining.
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: The use of calcine for selective zinc precipitation requires specialist knowledge to achieve satisfactory flowsheet design. Calcine from the bed of a fluid roaster is preferred, and factors such as the size distribution of ground calcine, the stoichio-metric ratio of the calcine precipitant to the initial dissolved zinc concentration and the moisture content of the resultant filter cake are parameters which require critical attention. Extensive testing in a fully-integrated electrolytic zinc...
Publication: CIM Bulletin
Auteur(s): O.M.G. NEWMAN, D.J. PALMER, J.R. WELSH
Mots clés: Calcine, Precipitation process, Zinc, Selective Zinc Precipitation, (SZP) Process, Washing, Hydrometallurgy, Impurity control
Numéro: 913
Volume: 81
Année: 1988
Texte
Sommaire: Approximately 2.0 million tonnes of phosphate rock is imported from the U.S. to Alberta annually and is used in the production of agricultural fertilizers. No phosphate rock is presently mined in Canada, although sources of igneous phosphate have been mined in the past. Sedimentary phosphate rock is found in nine geological units within the Cordilleran Foothills and Front Ranges region of Alberta. The Devonian-Mississippian Exshaw Formation, Permo-Pennsylvanian Rocky Mountain Supergroup, and...
Publication: CIM Bulletin
Auteur(s): D.E. MACDONALD
Mots clés: Phosphate rock, Alberta, Geology, Fertilizer industry.
Numéro: 913
Volume: 81
Année: 1988
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