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Subsidence due to undermining of sloping terrain : a case study / by Paul W. Jeran and Vladimir Adamek (Report of investigations ; 9205)

Subsidence due to undermining of sloping terrain : a case study / by Paul W. Jeran and Vladimir Adamek (Report of investigations ; 9205)
Microform図書
1988<YCA-I 28.23:9205>
National Diet Library
  • Subject HeadingMine subsidences -- Pennsylvania Longwall mining -- Pennsylvan...

Strata interactions in multiple-seam mining--two case studies in Pennsylvania / by Gregory J. Chekan, Rudy J. Matetic, and James A. Galek (Report of investigations ; 9056)

Strata interactions in multiple-seam mining--two case studies in Pennsylvania / by Gregory J. Chekan, Rudy J. Matetic, and James A. Galek (Report of investigations ; 9056)
Microform図書
1986<YCA-I 28.23:9056>
National Diet Library
  • Subject HeadingMine subsidences -- Pennsylvania Ground control (Mining) Pilla...

Comparison of aerial and ground surveying of subsidence over an active longwall / by John C. LaScola (Report of investigations ; 9214)

Comparison of aerial and ground surveying of subsidence over an active longwall / by John C. LaScola (Report of investigations ; 9214)
Microform図書
1988<YCA-I 28.23:9214>
National Diet Library
  • Subject HeadingMine subsidences -- Pennsylvania -- Waynesburg Region -- Measu...

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