The safety imperative—transforming the workplace to protect people

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Mots clés : The safety imperative;Loss management;Risk management;Workplace safety;Safety leadership
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Texte
Sommaire: During the past fifteen years, block caving mines have experienced huge changes in design, planning, and administration. These changes have allowed operators to drastically reduce costs, improve equipment productivity, and improve overall business performance. Because of this, the block/panel caving mining system is challenging actual open pit operations to maximize the Net Present Value (NPV) of the business. The main improvements are mine design, mine planning, and mine management.
These...
Publication: CIM Bulletin
Auteur(s): S. Fuentes S., J. Cáceres S.
Mots clés: Block caving method, Cost savings, Productivity growth, Underground mining
Numéro: 1082
Volume: 97
Année: 2004
Texte
Sommaire: In Turkey, the growing demand for lignite has resulted in increased lignite production and an emphasis on improving underground recovery. This has resulted in gradual improvements in mining methods and recoveries, and the extraction of remnant pillars in mines prior to their abandonment to maximize the resource recovery. Extracting these safety pillars presents a special hazard to mine employees and the stability of the mine. Often subjected to high stresses, the behaviour of these pillars...
Publication: CIM Bulletin
Auteur(s): C.O. Aksoy, H. Kose, E. Yalcin, K. Heasley, C. Mark
Mots clés: Safety pillars, Underground recovery, Numerical modelling, LAMODEL
Numéro: 1082
Volume: 97
Année: 2004
Texte
Sommaire: The effects of whole body vibration (WBV) on equipment operators have historically gone unnoticed as a major occupational health and safety concern. Recently, however, research has shown that WBV can have a serious effect on the human body, causing both physiological and psychological health problems.
Early studies carried out on light and heavy haul trucks as well as earth movers showed that all vehicles exceeded ISO 2631 guidelines for vibration exposure, and that vibration levels from...
Publication: CIM Bulletin
Auteur(s): J. Berezan, T.G. Joseph, V. del Valle
Mots clés: Vibration, Heavy hauler, Operator health, Onboard system
Numéro: 1082
Volume: 97
Année: 2004
Texte
Sommaire: A strong corporate commitment to safety and sound engineering practices have resulted in dramatic improvements to the safety record at the Quinsam mine of Quinsam Coal Corporation (QCC), wholly owned by Hillsborough Resources Inc. of Vancouver. Quinsam coal mine is about 25 km west of Campbell River on the east coast of Vancouver Island, British Columbia. Using continuous miners in a fully mechanized retreat room-and-pillar operation, it produces low sulphur, super compliance thermal coal for...
Publication: CIM Bulletin
Auteur(s): K. Galovich, P. Krivokuca
Mots clés: Quinsam coal mine, Safety practices, Occupational Health and Safety Committee, Room-and-pillar mining
Numéro: 1082
Volume: 97
Année: 2004
Texte
Sommaire: The copper price traded in the London Metal Exchange is a key factor for mining companies and for defining macroeconomic policies of producing countries like Chile. In this paper, the authors first review several methods currently used to forecast commodity prices, based on econometrics or statistics, in particular, time series analysis. The authors then propose an alternative methodology centred on geostatistical techniques such as co-kriging, lognormal kriging, and conditional simulations....
Publication: CIM Bulletin
Auteur(s): X. Emery, A. Cabañas
Mots clés: Time series analysis, Kriging, Conditional simulations, Multivariate geostatistics
Numéro: 1082
Volume: 97
Année: 2004
Texte
Sommaire: One of the major problems associated with the casting of aluminum alloys is the formation of gas porosity. Aluminum and its alloys are very susceptible to hydrogen absorption. Since solubility is much lower in solid state than liquid state, hydrogen atoms leave their position during solidification, and, by combining together, form hydrogen molecules. These micrometer scale cavities, called microporosity, cause the deterioration of mechanical properties, particularly strength, ductility,...
Publication: CIM Bulletin
Auteur(s): S.G. Shabestari, P. Mokarian, S. Saeidinia
Mots clés: Rotary degassing, Aluminum alloy, Scanning electron microscopy (SEM), Efficiency increase
Numéro: 1082
Volume: 97
Année: 2004
Texte
Sommaire: Introduction
Off-highway dump trucks are the basic haulage equipment used in most of open pit mines. Since haulage cost may account for up to 50% of the operational cost and up to 25% of a total cost, it is crucial to minimize it. Effectiveness of the equipment employed then becomes a key factor for the mine.
One of the most reliable and realistic methods to optimize shovel-truck systems is the queuing theory. It considers a random character of truck cycle time and associated costs. This...
Publication: CIM Bulletin
Auteur(s): D. Komljenovic, J. Paraszczak, K. Fytas
Mots clés: Queuing theory, Mining trucks, Shovel, Truck fleet sizing, Open pit
Numéro: 1082
Volume: 97
Année: 2004
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