The 1993 rebuild and upgrade of Kalgoorlie nickel smelter

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Texte
Sommaire: New tax rules that can apply to the repayment, extinguishment, or other settlement of a company's debt are finally taking shape. These new rules are far-reaching in their application, and can affect mining companies in a serious, negative way.
Publication: CIM Bulletin
Auteur(s): Robert B. Parsons
Numéro: 992
Volume: 88
Année: 1995
Texte
Sommaire: At Smoky River Coal Limited (SRCL), economic occurrences of structurally thickened coal deposits form attractive surface mining targets. These steeply dipping, structurally complex deposits require that special attention be given to pit wall design and operational practices.
Where anchor support is feasible, there is potential for reducing footwall waste requirements and/or increasing coal recovery. SRCL has used rock anchors to support footwall slopes since 1985. This paper outlines design...
Publication: CIM Bulletin
Auteur(s): R.F. Dawson, A.S. Bagnall, K. Barren
Numéro: 992
Volume: 88
Année: 1995
Texte
Sommaire: At Smoky River Coal Limited (SRCL), economic occurrences of structurally thickened coal deposits form attractive surface mining targets. These steeply dipping, structurally complex deposits require that special attention be given to pit wall design and operational practices.
Where anchor support is feasible, there is potential for reducing footwall waste requirements and/or increasing coal recovery. SRCL has used rock anchors to support footwall slopes since 1985. This paper outlines design...
Publication: CIM Bulletin
Auteur(s): R.F. Dawson, A.S. Bagnall, K. Barren
Numéro: 992
Volume: 88
Année: 1995
Texte
Sommaire: In 1993, trials of two innovative applications of liner support involving the replacement of bolts in the ground support system were undertaken at Inco mines. The first trial involved an evaluation of the effect of dynamic loading on mesh-reinforced boltless shotcrete in a sub-level cave mining area on 2400 level at Stable Mine. The second trial involved an evaluation of the MIROC Mineguard spray-on liner as a replacement for bolts and screen support, or as a replacement for screen support...
Publication: CIM Bulletin
Auteur(s): Samantha Espley, Chris Langille
Numéro: 992
Volume: 88
Année: 1995
Texte
Sommaire: Since the Mathew's method for open stope design was first proposed by Colder Associates in 1980 it has been applied at a number of mine sites in Canada. The initial hypothesis was based on a relatively small amount of data and the intervening period has allowed the collection of a significant amount of new data to test the validity of the method.
This paper examines a brief history of the evolution of rock mass classification systems to provide background and emphasize their empirical and...
Publication: CIM Bulletin
Auteur(s): S.B.V. Stewart, W.W. Forsyth
Numéro: 992
Volume: 88
Année: 1995
Texte
Sommaire: The Garford bulb anchor is a modified cable geometry developed and patented by Garford Pty Ltd. of Australia, and which has recently become widely available in Canada. It is produced by deforming the seven wires (including the central kingwire) of a standard cable into a bulb* (Fig. 1). Laboratory cable pull tests indicate that the bond capacity of the 25 mm Garford bulb anchor is comparable to the nutcase cable, in excess of the birdcage cable, and significantly higher than standard 7-wire...
Publication: CIM Bulletin
Auteur(s): A.J. Hyett, W.F. Bawden, N. Hedrick, J. Blackall
Numéro: 992
Volume: 88
Année: 1995
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