Quick guides to the evaluation of orebodies

Abstract Annual mining revenue can be computed by formulae relating metal prices, smelting schedules, concentrate grade and recovery to known ore grade and an assessment of core samples. Operating costs at different daily tonnages are related to orebody shape, mining method, milling process and general plant services. Capital costs are related to sizing of mining equipment, mine development, plant-site topography, climate and accessibility, plant services and personnel housing.
Keywords: Orebodies, Evaluation, Open-pit mines, Underground mines, Process plants, Capital costs, Operating costs, Revenues, Equipment, Storage, Transportation, Housing, Manpower, Cost formulae.
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Summary: This paper discusses the mining problems encountered at the Fording River coal mine to date, and how they have been solved. All of the production now comes from surface mining, but underground hydraulic mining is planned and briefly described. Other facets of the operation, including markets, equipment and personnel, are covered.
Publication: CIM Bulletin
Author(s): P.J. URSO
Keywords: Fording River Mine, Coal mining, Open-pit mining, Hydraulic mining, Drilling, Blasting, Reclamation, Equipment, Safety.
Issue: 814
Volume: 73
Year: 1980
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Summary: Extensive mechanization of underground mining operations, improvements in blasting technology and the development of simulation models for systems evaluation has now made it feasible to optimize rock fragmentation and materials handling operations. Methods of achieving these objectives are described in this paper, with particular emphasis on the need to obtain precise fi eld data measurements. Techniques are illustrated with reference to the sub-level open stoping system of mine production.
Publication: CIM Bulletin
Author(s): G.D. JUST
Keywords: Underground mining, Rock fragmentation, Materials handling, Sloping, Blasting, Gravity flow, Simulation, Slusher extraction, Flow characteristics.
Issue: 814
Volume: 73
Year: 1980
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Summary: This paper briefly describes the underground crushing and conveying system at Sherritt Gordon Mines' Ruttan Mine. A series of three steel-cord belted conveyors, with a total length of 2155 metres and a total vertical lift of 407 metres, convey the muck from the underground crushing station to the mill at the surface. The maximum size of the crushed rock is 6 in. All the conveyors are provided with numerous safety and fire suppression devices.
Publication: CIM Bulletin
Author(s): S.K. PAUL
Keywords: Underground mining, Ruttan Mine, Crushers, Conveyors, Dust collectors, Fire protection, Safety.
Issue: 814
Volume: 73
Year: 1980
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Summary: This paper begins with a brief discussion of the geology of the Newfoundland Zinc Mine area. The results of groundwater studies and pumping tests are then presented. It was decided that groundwater in the mine could best be controlled by conventional sump pumping and grouting. The system is fully described, as well as plans for improvements on the method.
Publication: CIM Bulletin
Author(s): T.M. SIEW
Keywords: Underground mining, Dewatering, Newfoundland Zinc Mines Ltd., Groundwater, Pumping, Grouting, Mine drainage.
Issue: 814
Volume: 73
Year: 1980
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Summary: In the two years since their introduction, Friction Rock Stabilizers have replaced 40 per cent of the previously used fixtures in the metal and non-metal mines in the United States. The Friction Rock Stabilizer, or "Split Set", is a mechanical rock stabilizing system which uses friction to prevent rock movement. The Split Set is a tapered, rolled, steel tube that is slotted along its length. As it is driven into a drilled hole smaller than its diameter, it compresses, pre-loading...
Publication: CIM Bulletin
Author(s): JAMES J. SCOTT
Keywords: Underground mining, Rock mechanics, Roof support, Friction Rock Stabilizers, Split Sets, Anchorage tests.
Issue: 814
Volume: 73
Year: 1980
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Summary: With reference to the chemical constraints underlying the ion exchange process for uranium recovery, a generalized view is presented on the actual and the achievable efficiency of the process. The area considered is restricted to acid leach circuits in combination with nitrate, chloride or sulphuric acid elution. A comparison between actual plant results and the chemical requirements shows that:(a) Unless new and better ion exchange resins are developed, no dramatic change in equipment size...
Publication: CIM Bulletin
Author(s): J. BENNETT, E. BYLEVELD, A. HIMSLEY
Keywords: Hydrometallurgy, Ion exchange, Reagents, Uranium recovery, Leaching, Elution, Resins, Nitrates, Sulphuric acid, Chlorides.
Issue: 814
Volume: 73
Year: 1980
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Summary: The Brunswick Mining concentrator processes 10,000 D.S.T. per day of a complex sulphide ore. Four separate concentrates—zinc, lead, copper and bulk—are produced by selective flotation. Several major changes have been made to the Brunswick flotation circuit to improve the process and control.This paper will describe the present flotation practices at the Brunswick Concentrator. Special emphasis is given to the conversion of two of the primary circuits to an SO2-aeration flowsheet,...
Publication: CIM Bulletin
Author(s): STUART McTAVISH
Keywords: Flotation, Brunswick Mining and Smelting, Copper separation, Lead upgrading, Zinc flotation, Reagents, Process control, Computers.
Issue: 814
Volume: 73
Year: 1980
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Summary: Eight volcanogenic massive sulphide districts in Canada and Japan, ranging in age from Archean to Miocene, were selected for analysis. The study revealed that: (1) each district has an average diameter of 32 km; (2) the districts contain 4 to 20 deposits each, with an average of 12 deposits; (3) the average total base metal content per district is 4.6 million tonnes, with a coefficient of variation of 32%; (4) ranked in order of size, the largest deposit in each district contains, on average,...
Publication: CIM Bulletin
Author(s): D.F. SANGSTER
Keywords: Ore deposits, Sulphide deposits, Massive sulphides, Volcanogenic deposits, Hokuroku district, Bathurst district, Flin Flon district, Snow Lake district, Noranda district, Matagami district, Manitouwadge district.
Issue: 814
Volume: 73
Year: 1980
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Summary: The concept of employing a project management team to coordinate all aspects of the construction of a new resource development has gained wide acceptance. This team can be formed from within the staff of large mining companies or contracted from major engineering firms and consultants. The mandate of the project managers usually terminates on successful startup of the operation. For frontier mineral developments in the Canadian Arctic or in the developing countries, startup and the initial...
Publication: CIM Bulletin
Author(s): J.E. MARSHALL
Keywords: Nanisivik Mines Ltd., Mining operations, Project management, Mineral development, Arctic, Baffin Island, Financing, Personnel, Training, Logistics.
Issue: 814
Volume: 73
Year: 1980
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