Geologic Hazards and Roof Stability in Coal Mines

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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 Add to Reading List Source URL: www.cdc.gov Download Document from Source Website File Size: 3,85 MB Share Document on Facebook

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