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Geology / Sedimentology / Mine Safety and Health Administration / Seatearth / Longwall mining / Coal mine bump / Coal / National Institute for Occupational Safety and Health / Coal mining / Sedimentary rocks / Mining
Date: 2012-08-29 17:21:32
Geology
Sedimentology
Mine Safety and Health Administration
Seatearth
Longwall mining
Coal mine bump
Coal
National Institute for Occupational Safety and Health
Coal mining
Sedimentary rocks
Mining

Geologic Hazards and Roof Stability in Coal Mines

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