Failsafe — application to the underground environment

Abstract The application of failsafe techniques to ask the "What if" questions about any process has been well established in the chemical industry for many years. The unusual number of fatalities that occurred in Ontario during 1986-87, prompted Inco management to look at the Fail Safe techniques as a method of improving safety performance.
Keywords: Safety, Failsafe techniques
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Publication: CIM Bulletin
Author(s): C.J. Kerr
Keywords: Equipment, Hoisting, Braking systems
Issue: 930
Volume: 82
Year: 1989
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Publication: CIM Bulletin
Author(s): W. McKay, E. Laatio
Keywords: Equipment, Tara Mines Ltd
Issue: 930
Volume: 82
Year: 1989
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Summary: On August 8, 1989, the Minister of Finance released a technical paper which sets out many of the details of a proposed 9% federal value-added tax to be called the "Goods and Services Tax". The GST, which is scheduled to be implemented with effect from January 1, 1991, will affect all Canadians in different ways and to varying degrees. The mining industry itself should, by and large, benefit from the new tax.
Publication: CIM Bulletin
Author(s): Robert B. Parsons
Issue: 930
Volume: 82
Year: 1989
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Summary: Placer Dome Inc. is the operator of the Musselwhite project located 100 km north of Pickle Lake, Ontario. J.S. Redpath Limited was contracted to conduct an underground exploration program using shaft access.
During the winter of 1988, the shaft collar was established in 16 metres of water bearing sand and till overburden. This proper will illustrates the engineering techniques used to overcome the obstacles to installing a shaft collar in deep overburden. Specialized dewatering and piling...
Publication: CIM Bulletin
Author(s): Michael D. Winship, George S. Martin
Keywords: Mining methods, Shaft collaring, Musselwhite project, Exploration, Underground mining, Engineering techniques
Issue: 930
Volume: 82
Year: 1989
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Summary: Estimating the mineral inventory and the mineable reserves in underground gold deposits is a difficult problem. This paper will consider a number of estimation techniques and recommend a method based on the geostatistical technique of indicator kriging.
A general discussion on the modelling of vein deposits is followed by a more detailed presentation of the geostatistical estimation method. For comparison, the mineral inventory for one vein of the Eastmain deposit in northern Quebec has been...
Publication: CIM Bulletin
Author(s): Clayton Deutsch
Keywords: Eastmain, Ore reserves, Mineral inventory, Vein type deposits, Geostatistics, Indicator kriging, Gold deposits
Issue: 930
Volume: 82
Year: 1989
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Summary: In the base metals industry of today, operations required to continuously improve productivity and reduce unit production costs. Consistent with these goals is the improvement of the muck haulage cycle from open stapes with the No. 12 Mine.
Existing haulage from open slopes occurs with LHD units. Experience at Brunswick indicates that LHD units have a higher unit cost per tonne mucked than loader-truck combinations when the haulage exceeds approximately 150 m.
The reintroduction of open...
Publication: CIM Bulletin
Author(s): Stephen B. Flewelling, J. Jerome MacDonald
Keywords: Equipment, Continuous loading systems, Technology, AL60 loader, Underground mining
Issue: 930
Volume: 82
Year: 1989
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Summary: This paper outlines the upgrading of a double-drum 2000 hp cage hoist to provide fully-automatic operation from shaft station control panels. The application utilizes programmable controller technology to provide all necessary functions for movement of personnel and material to 22 locations in a 4000 ft shaft.
Various functions involving special design considerations such as "chairing", "jogging", and three modes of "multi-level calling service", are outlined....
Publication: CIM Bulletin
Author(s): E. Henderson
Keywords: Equipment, Hoisting systems
Issue: 930
Volume: 82
Year: 1989
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