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The influence of dolerite sills on total extraction underground workings and surface subsidence : Lear, C D; Schumann, E H R Proc Symposium on Advances in Rock Mechanics in Underground Coal Mining, Witbank, 12 September 1989P135–145. Publ Marshalltown: SANGORM, 1989


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

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