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A model of shield-strata interaction and its implications for active shield setting requirements microfrom / by Thomas M. Barczak and David C. Oyler (Report of investigations ; 9394)

A model of shield-strata interaction and its implications for active shield setting requirements microfrom / by Thomas M. Barczak and David C. Oyler (Report of investigations ; 9394)
Microform図書
1991<YCA-I 28.23:9394>
National Diet Library
  • Subject Heading...matical models Longwall mining -- Mathematical models

Procedures for determining support of excavations in highly yielding ground / by J.D. Dixon, M.A. Mahtab, and T.W. Smelser (Report of investigations ; 8990)

Procedures for determining support of excavations in highly yielding ground / by J.D. Dixon, M.A. Mahtab, and T.W. Smelser (Report of investigations ; 8990)
Microform図書
1985<YCA-I 28.23:8990>
National Diet Library
  • Subject Heading...ata processing Longwall mining -- Mathematical models Longwall mining -- Data proce...

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