Impact of rock engineering on mining and tunnelling economics : proceedings of the SANGFORM Symposium, Welkom, 7-8 October, 1991

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245 1 0 ‡aImpact of rock engineering on mining and tunnelling economics : ‡bproceedings of the SANGFORM Symposium, Welkom, 7-8 October, 1991 / ‡cInternational Society for Rock Mechanics, South African National Group.
260 ‡aOrange Grove, South Africa : ‡bSANGFORM, ‡c[c1991?].
300 ‡a[i], 90 p. : ‡bill. ; ‡c29 cm.
500 ‡aCover title.
504 ‡aIncludes bibliographic references.
538 ‡aMode of access: Internet.
650 0 ‡aEngineering geology ‡zSouth Africa ‡vCongresses.
650 0 ‡aEngineering geology ‡vCongresses.
650 0 ‡aRock mechanics ‡zSouth Africa ‡vCongresses.
650 0 ‡aRock mechanics ‡vCongresses.
710 2 ‡aSouth African National Group on Rock Mechanics.
710 2 ‡aInternational Society for Rock Mechanics.
711 2 ‡aSANGORM Symposium ‡d(1991 : ‡cWelkom, South Africa)
CID ‡a007997792
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