Design techniques for sublevel caving layouts

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Mots clés : Underground mining;Sublevel caving;Computer optimization;Recovery;Dilution;Extraction
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Publication: CIM Bulletin
Auteur(s): JEAN-PAUL DROLET
Mots clés: Seabed mining, Oceans, Nickel industry, Law of the Sea Conference, Modules, Offshore mining, Resources, Developing countries
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: This paper, in presenting the results of the application of the assessment centre method at Texasgulf Canada Ltd., illustrates a novel "in-use" technique for manpower training in the mining industry.
Publication: CIM Bulletin
Auteur(s): JOHN P. PAPPONE, ROBERT A. MaclNNES, PETER MOON
Mots clés: Manpower, Training, Texasgulf Canada Ltd., Assessment centres, Supervision, Evaluation, Underground mining
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: This paper begins by describing the parameters of high-speed underground tracked drifting operations and the mucking cycle, and discusses their variations. The railbound Haggloader 8HR is then described, as well as the Hagglund shuttle trains, outlining the advantages and disadvantages of the system. A comparison with conventional mucking operations is then given.
Publication: CIM Bulletin
Auteur(s): JULIAN BALDRY
Mots clés: Underground mining, Drifting, Materials handling, Mucking, Haggloaders, Shuttletrains, Loading cycles, Tramming.
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: This paper will identify where the industry is heading with iron ore in the next ten years. From a customer's point of view, an indication of the changing, yet expanding, market will be made. This will progress further into the most likely changes in chemical and physical requirements of the ore products. No definite target can be set for 1990, but the logic from the direction of the changes will be established.
Publication: CIM Bulletin
Auteur(s): NOEL G. THOMAS
Mots clés: Iron ore, Markets, Electric furnaces, Direct reduction, Scrap, Blast furnaces.
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: This paper presents the results of a detailed feasibility study carried out to investigate whether a low-grade deep underground mine of Falconbridge Nickel Mines Ltd., closed since 1975, could be made more productive and profitable by the introduction of new mining technology. For this purpose, recent advances in mine design and development concepts, larger and better designed machines, such as hydraulic drills, high-pressure down-the-hole machines, LHDs, new blasting concepts, more efficient...
Publication: CIM Bulletin
Auteur(s): K.H. SINGH, L.H. RAJALA
Mots clés: Underground mining, Falconbridge, Deep mining, East Mine, Drilling, Blasting, Inverted bench blasting, Sloping, Rock mechanics, Mechanized mining.
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: The evolution of mining methods at Brunswick Mining and Smelting shows that, in the case of a large deposit, technology must adapt itself to changing conditions. As problems are encountered, management must modify their approach if they hope to meet production quotas. This search for new and better ways started with the opening of the No. 12 orebody and is still going on today.From large-scale open sloping, the Brunswick Mining and Smelting operation went to transversal cut-and-flll, then to...
Publication: CIM Bulletin
Auteur(s): N. DUFRESNE
Mots clés: Brunswick Mining and Smelting, Underground mining, Sloping, Cut-and-fill mining, Avoca method, Rebars, Grouting, Prepinning, Mechanization.
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: A review of the current status of gasification technology shows that many engineering systems are immediately available for use in the gasification of coal. Widespread international experience can be brought to bear on the atmospheric pressure gasification of all Canadian coals.Unless a high ash content dictates the use of a fluid-bed gasifier, it appears that bituminous coals can be used in gravitating (fixed) bed systems and that the strongly caking coals are most suited to the high-pressur...
Publication: CIM Bulletin
Auteur(s): T.D. BROWN
Mots clés: Coal gasification, Coal liquefaction, Fluid-bed gasification, Hydroliquefaction, Gasifiers, Wellman-Galusha gasifier, Lurgi gasifier, Koppers-Totzek gasifier, Shell-Koppers gasifier, Winkler gasifier, Conoco process, Saarberg-Otto gasifier, Sasol process, SRC process, H-Coal process, Exxon process.
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: The mining industry may have survived the October 28 federal budget relatively unscathed, but the same certainly cannot be said of the petroleum sector—and many mining men are left wondering if their industry will be the next one to be singled out for special attention, as federal and provincial governments seek additional revenues and pursue nationalistic or provincial policies.Higher taxes, higher prices, a potpourri of "incentives", and a "Cana-dianization" policy...
Publication: CIM Bulletin
Auteur(s): ROBERT D. BROWN, ROBERT B. PARSONS
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: Girth welding operations represent the rate-limiting step in pipeline construction. A joint industry-university program was set up to establish the field welding characteristics of large-diameter, high-strength line pipe.Theoretical work carried out at the University of Waterloo showed that pipe wall thickness and joint misalignment prior to welding has a marked influence on the lifting stresses acting on the root pass of girth welds. Pipe diameter and pipe ovality had negligible effects....
Publication: CIM Bulletin
Auteur(s): R.J. PICK, T.H. NORTH, A.G. GLOVER
Mots clés: Technology, Welding, Pipelines, Stelco, University of Waterloo, Girth welding, Steel.
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: Cut-and-fill mining is a sloping method that has been widely utilized in the mining industry over the past forty years. It took preference over shrinkage methods at Levack in the early 1930s because of its safety aspects; i.e., prompt support of the slope sidewalls, good working floors and better accessibility to support poor back areas. In addition, higher recoveries of ore were possible because of the flexibility of the method in that silling could take place easily at any horizon;...
Publication: CIM Bulletin
Auteur(s): P.M. MAY
Mots clés: Underground mining, Cut-and-fill mining, Inco Limited, Levack Mine, Sloping, Drilling, Mechanized mining.
Numéro: 825
Volume: 74
Année: 1981
Texte
Sommaire: Knowledge of radon emanation rates from uranium-bearing rocks is essential to the design of mine ventilation systems for uranium mines. Measurements of equilibrium ratio between radon and its daughters in mine air are important for a better control of mine radiation conditions. The concentrations of radon and daughters were monitored at cut-and-fill slopes in the Beaverlodge Mine of Eldorado Nuclear Ltd. during all phases of the mining cycle. The radon emanation rates of ore and rock samples...
Publication: CIM Bulletin
Auteur(s): K.C. CHENG, J.W.M. PORRITT
Mots clés: Underground mining, Uranium mining, Radon emanation rates, Cut-and-fill mining, Radiation, Ventilation, Beaverlodge Mine, Backfilling, Environmental control.
Numéro: 825
Volume: 74
Année: 1981
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