Surface coal mining in Elk Valley, British Columbia

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Mots clés : Elk Valley Mines;Surface coal mining;Hangingwall waste removal;Seam cleaning;Coal removal;Footwall waste removal
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Texte
Publication: CIM Bulletin
Auteur(s): YVES AYMONG
Mots clés: Equipment, Maintenance, Power transformers, Visual inspection, Oil analysis, Cooling fans, Thermography
Numéro: 871
Volume: 77
Année: 1984
Texte
Sommaire: Methane emission and the desorption characteristics of vertical borehole coal samples of Greenhills multiple seams in the vicinity of Elkford, British Columbia were investigated. Three vertical boreholes at depths of 335 m, 380 m and 395 m were drilled along the west wall of an active open pit mine and 44 core samples from various coal seams were obtained for desorption studies.
The results are presented in three tables and illustrated with six figures. The methane content was found to...
Publication: CIM Bulletin
Auteur(s): K.K. FENG, K.C. CHENG, R. AUGSTEN
Mots clés: Environmental control, Ventilation, Methane, Coal seams, Greenhills Mine
Numéro: 871
Volume: 77
Année: 1984
Texte
Sommaire: Decelerometer testing of a rigid guide system in a mine shaft provides useful information to operating and maintenance people. High acceleration/deceleration rates can lead to high maintenance costs to both conveyances and shaft and can also present an operating risk. Possible disastrous results in the shaft have been avoided by restricting the maximum conveyance speed until the shaft and/or conveyance problems have been solved.
The test instrument is a valuable aid especially during...
Publication: CIM Bulletin
Auteur(s): KEITH JONES, LARGO ALBERT
Mots clés: Equipment, Maintenance, Decelerometers, Decelerometer testing, Shaft guide alignment, Hoist ropes, Hoist braking systems
Numéro: 871
Volume: 77
Année: 1984
Texte
Sommaire: Data for underground mine-hoist ropes determined in the Ontario Special Rope Tests were obtained, encoded and analyzed statistically. Prior to refined statistical analyses, these data were subjected to characterization studies and preliminary analyses to allow trends to emerge that could be used to guide and facilitate the refined analysis. The data were characterized by determining distributions for a wide range of variables including remaining strength, service life in terms of time and...
Publication: CIM Bulletin
Auteur(s): RICHARD L JENTGEN, RICHARD C. RICE, GRANT L ANDERSON
Mots clés: Equipment, Maintenance, Wire ropes, Mine-hoist ropes, Underground mines, Ontario Special Rope Tests
Numéro: 871
Volume: 77
Année: 1984
Texte
Sommaire: An alternative to building new copper smelters, because of either stringent environmental regulations or in order to expand current plant capacity, could be achieved through the retrofitting of old reverberatory furnaces by making use of tonnage oxygen. The CONTOP technology offers unique advantages over other techniques for this purpose, especially regarding substantial reduction in both, capital and operating costs. This is possible to achieve since the reverb throughput could be largely...
Publication: CIM Bulletin
Auteur(s): N. TORRES
Mots clés: Reverb furnaces, Copper smelting, Contop process, Cyclone smelting
Numéro: 871
Volume: 77
Année: 1984
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