Benefits of assessing line-of-sight from a LHD vehicle in a virtual environment

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Texte
Sommaire: Surface subsidence and sinkhole development over abandoned and collapsing underground mine workings are major environmental and public safety hazards in some areas. Small-scale undocumented workings are particularly problematic because their presence is often unknown until infrastructure has been developed over them and there is an unexpected subsidence event, often requiring expensive site stabilization or abandonment. Surface wave imaging is a relatively new seismic technique that generates...
Publication: CIM Bulletin
Auteur(s): S.D. Butt, C. Xu, M.D. Vance, G.C. Corbett
Numéro: 1089
Volume: 98
Année: 2005
Texte
Sommaire: Following initial discovery in 1991, BHP Diamonds Inc. (now part of BHP Billiton) opened Canada’s first diamond mine, the EKATI Diamond Mine, in the Northwest Territories, on October 14, 1998. Four short years later, on November 29, 2002, saw the opening of North America’s first underground diamond mine—the Koala North mine. Nestled between the original Panda open pit and the new Koala pit, which is now in production, Koala North represents the first underground kimberlite...
Publication: CIM Bulletin
Auteur(s): P. Harvey
Numéro: 1089
Volume: 98
Année: 2005
Texte
Sommaire: Several sources of information often contribute to the comprehension of an ore deposit, for instance samples from diamond drill holes, reversed-circulation drill holes, or blast holes. Even if all the available information comes from the same drill hole type, it may have been collected through several campaigns, sampled with different protocols, or analyzed by different laboratories. In general, these sources of information do not have the same quality, therefore, they constitute different...
Publication: CIM Bulletin
Auteur(s): X. Emery, J.P. Bertini, J.M. Ortiz
Numéro: 1089
Volume: 98
Année: 2005
Texte
Sommaire: The preparation of a long-term plan requires an understanding of all the facets of a mine, among them, the access and other infrastructures; the general layout; the geology, reserves, and extraction plan of every sector; and the productivity of the workers. The planner combines all these elements, often in an intuitive way, into a number of alternative plans, trying to identify the most likely outcomes and problems. The final plan that is compiled is functional, but there is no certainty that...
Publication: CIM Bulletin
Auteur(s): G. McIsaac
Numéro: 1089
Volume: 98
Année: 2005
Texte
Sommaire: Underground coal production at the Hustas mine, west of the village of Eynez, was from the KM2 seam, which lies at an average depth of 200 m and ranges from 15 m to 25 m in thickness with an average extractable thickness of about 18 m. The underground lignite mining methods employed in Turkey are mostly non-mechanized longwall methods. At the Hustas mine, the method used is a manual double-slice longwall method. The face area is maintained at about 2 m high using hydraulic steel props...
Publication: CIM Bulletin
Auteur(s): C.O. Aksoy
Numéro: 1089
Volume: 98
Année: 2005
Texte
Sommaire: The Ambatovy Nickel Project involves the proposed recovery of nickel and cobalt from a laterite deposit in Madagascar. The project has the potential to produce 60,000 t of nickel and 5,600 t of cobalt annually. In support of the bankable feasibility study, laboratory and mini pilot plant testwork was carried out at the Dynatec laboratory in Fort Saskatchewan. This paper describes the major findings of the test program.The Ambatovy ore is primarily ferralite (limonite). Saprolite is...
Publication: CIM Bulletin
Auteur(s): M.J. Collins, L.A. Barta, K.R. Buban, R. Kalanchey, G. Owusu, R. Raudsepp, J. Stiksma, I.M. Masters
Numéro: 1089
Volume: 98
Année: 2005
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