Equipment adaptation to the Canadian North at Iron Ore Company of Canada

Abstract Operating heavy equipment in Labrador, where the winters are 8 months long and the temperature frequently drops below -40°F (-40°C) for days and sometimes weeks presents unique problems in both the operation and maintenance functions.
Winterization programs must be well designed and implemented at the proper time. These programs must include the proper selection of fuel oil, engine oil, hydraulic oils, greases, cooling system fluids, etc. More often than not, modifications have to be made to the original equipment in order that it can be operated safely and economically in the Canadian North. Manufacturers usually design equipment for a less harsh environment and the user makes adaptations by trial and error.
Operators have to be trained for the proper operation on ice- and snow-covered roads in an open-pit mine. Special emphasis must be put on haulage road conditions. In this paper, the authors will cover some specific maintenance procedures, equipment modifications and operator training problems experienced by the Iron Ore Company of Canada in its open-pit operation in Labrador.
Keywords: Mining, Far north, Equipment, Open-pit mining, Drilling, Blasting, Dewatering, Shovels, Hauling, Transporting, Iron Ore Company of Canada
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Publication: CIM Bulletin
Author(s): D.V. KREFTING, D.R. BENNETT
Keywords: Mining, Far North, Transport systems, Off-highway trucks, Highway trucks, Railways, Overland conveyors, Loading, Crushing
Issue: 862
Volume: 77
Year: 1984
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Summary: An experimental program has been carried out by the Australian Atomic Energy Commission to compare the effectiveness of Caro's acid as an alternative oxidant to pyrolusite in the leaching of uranium ores from the Alligator Rivers region of northern Australia. Batch leaching tests on Ranger, Nabarlek, Koon-garra and Jabiluka ores showed that uranium extraction was unaffected by choice of oxidant, but that Caro's acid reduced acid requirements by 15 - 25%. Lime requirements for neutralization...
Publication: CIM Bulletin
Author(s): R.J. RING, M. YAMINE, D.J. WATERS
Keywords: Uranium extraction, Caro's acid, Leaching, Oxidants, Pyrolusite, Hydrogen peroxide, Alligator Rivers ores
Issue: 862
Volume: 77
Year: 1984
Text
Summary: The Polaris mining operation (Fig. 1) is located on Little Corn-wa/lis Island in the Canadian Arctic, an area with a very limited shipping season and a hostile climate. The operation consists of the underground works, barge-mounted concentrator facilities, concentrate storage and shipping facilities, a personnel accommodation complex and an airstrip.
The electrical energy for the operation is provided by four 2.3 MW diesel-generators installed on the barge. The power is distributed through a...
Publication: CIM Bulletin
Author(s): A. NIELSEN
Keywords: Mining, High Arctic, Polaris mining project, Energy systems, Diesel generators, Air systems, Engine cooling systems, Exhausts, Heat utilization
Issue: 862
Volume: 77
Year: 1984
Text
Summary: The results obtained from the study of soil geochemistry in 14 test areas as well as along six regional traverses clearly indicate that there are important variations in the trace-element content of the A1 soil horizon developed on glacio-lacusthne sediments. The observed dispersions are in all probability attributable to the same sources which are responsible for the anomalies in the groundwaters and the basal till.
Of the fourteen test areas chosen, thirteen are clearly anomalous in the...
Publication: CIM Bulletin
Author(s): J.-P. LALONDE, M. BEAUMIER
Keywords: Exploration, Exploration geochemistry, Pedogeochemistry. Soil, Humus, Glacio-lacustrine sediments, Till, Groundwaters.
Issue: 862
Volume: 77
Year: 1984
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