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Benefits of early shaft pillar extraction on 2 shafts at Impala Platinum Limited : Spencer, D A Proc SANGORM Symposium on Impact of Rock Engineering on Mining and Tunnelling Economics, Welkom, 7–8 October 1991P37–39. Publ. Orange Grove: SANGORM, 1991

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 122 KB
Volume: 30
Category: Article
ISSN: 0148-9062
DOI: 10.1016/0148-9062(93)90673-2

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