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Multiseam mining in South Africa : Hill, R W Proc Symposium on Advances in Rock Mechanics in Underground Coal Mining, Witbank, 12 September 1989P119–123. Publ Marshalltown: SANGORM, 1989


Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
107 KB
Volume
28
Category
Article
ISSN
0148-9062

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