Project Environmental Approval

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Mots clés : Environmental control;Project approvals;Resource development;Design engineering;Mining claims;Construction;Permits;Approvals
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Texte
Sommaire: This paper discusses the installation of corrugated steel linings in bored raises at Inco's Thompson Mine. The procedure for the installation of these linings is outlined and the relative advantages are compared with conventional methods of ground support. Future trends in the use of corrugated steel products are then discussed.
Publication: CIM Bulletin
Auteur(s): Richard N. Zimmer
Mots clés: Underground mining, Linings, Raise boring, Thompson Mine, Steel linings, Sloping, Timbering.
Numéro: 798
Volume: 71
Année: 1978
Texte
Sommaire: The geographic occurrence of economic mineral deposits presents a variety of problems in modern tailings disposal operations. This paper presents case histories in several sectors of the mineral industry as well as the several stages of operations planning required for new designs, system expansion, reactivation of abandoned systems and upgrading to present environmental standards.
Publication: CIM Bulletin
Auteur(s): J. D. Jones, R. G. Jenkins
Mots clés: Environmental control, Tailings ponds, Reclamation, Thierry Project, Madawaska Mines Ltd., Madeleine Mines Ltd., Water reclaim, Dams.
Numéro: 798
Volume: 71
Année: 1978
Texte
Sommaire: A process utilizing ozone for the precipitation of cobalt from nickel sulphate liquors containing ammonium sulphate has been developed. Best results were obtained using nickel carbonate to maintain solution pH at 5.0 to 5.5. Work was performed both in column and stirred-tank reactors. Variables studied included neutralizer type and concentration, NH4+ concentration, temperature, Ni++ and Co++ concentration, per cent O3 in the O2 carrier gas, O3 input rate and agitation. The over-all rate of...
Publication: CIM Bulletin
Auteur(s): C. Nikolic, P. B. Queneau, W. G. Sherwood, C. B. Barlow, C. S. Simons
Mots clés: Hydrometallurgy, Nickel, Cobalt, Ozonation, Reactors, Agitators, Column reactors.
Numéro: 798
Volume: 71
Année: 1978
Texte
Sommaire: The annual production of mineral and mineral-based wastes in Canada is conservatively estimated to be 400 million tons. Over 90 per cent of this amount is waste rock or mill tailings from the mining and mineral processing industry. The remainder are slags and ashes from the metallurgical industry, and sludges from the chemical industry. Because of impurity content, remote location, or both, most wastes have limited usefulness and, indeed, are a liability in that they must be transported to...
Publication: CIM Bulletin
Auteur(s): R.K. Ceilings
Mots clés: Environmental control, Industrial minerals, Mineral wastes, Waste resources, Tailings, Slag, Ash, Sludge.
Numéro: 798
Volume: 71
Année: 1978
Texte
Sommaire: Cerro Verde is one of several large porphyry-type copper deposits in Southern Peru. The copper occurs as primary sulphides, with a significant oxide capping. The exploitation of the deposit has been correspondingly divided into two stages, the first consisting of copper production from oxides, and the second from sulphides.Minero Peru successfully started the Stage I plant in June of 1977 with the first production of electroron copper cathodes. This paper is essentially devoted to a descripti...
Publication: CIM Bulletin
Auteur(s): Victor R. Eyzaguirre P., Roy Ellerman, Lynton Gormely
Mots clés: Hydrometallurgy, Cerro Verde Project, Peru, Copper production, Crushing, Leaching, Pad leaching, Solvent extraction, Solution storage, Electrowinning, Cosecha solutions.
Numéro: 798
Volume: 71
Année: 1978
Texte
Sommaire: Among the known iron deposits in Canada, many are of low grade and require beneficiation to produce an acceptable blastfurnace feed. Some of the deposits have never been considered for commercial exploitation due to the lack of a suitable concentrating process. A number of deposits of this type are located in Northern Ontario. The problem in upgrading these deposits is three fold. Firstly, the iron occurs as a mixture of magnetite and hematite. Secondly, the grain size of the material can be...
Publication: CIM Bulletin
Auteur(s): H. O. Lien, J. G. Morrow
Mots clés: Mineral processing, Beneficiation, Iron ores, Flocculation, Desliming, Grinding, Autogenous grinding, Pebble milling, Starch, Geraldton deposit, Reagents.
Numéro: 798
Volume: 71
Année: 1978
Texte
Sommaire: The possibility of diamonds occurring in Canada was first raised by W. H. Hobbs in 1899, who concluded:"that the apex of the fan of diamond distribution probably lies somewhere in the strip of the territory bordering James Bay on the east."This was based on the occurrence of diamonds in surflcial sediments at various locations south of the Great Lakes.There are two recorded discoveries of drift diamonds in Ontario: (a) the Peterborough Diamond, 33 carats in size, poorly documented...
Publication: CIM Bulletin
Auteur(s): J. J. Drummer
Mots clés: Diamonds, Economic geology, Peterborough Diamond, Jarvi Diamond, Kimberlites, Glacial drift, James Bay Lowlands, He Bizard, Labrador, Somerset Island, Rift structures, Carbonatites.
Numéro: 798
Volume: 71
Année: 1978
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