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- Mining types and methods:
- Extended cut mining
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- Peer reviewed journal articles
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4/1/1999 - Peer reviewed journal articlesThe Coal Mine Roof Rating (CMRR) has been widely accepted as a tool for geologic characterization and mine planning. The application of the CMRR to extended cuts (cuts greater that 6 m (20 ft) in length) is discussed.
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Content source: National Institute for Occupational Safety and Health, Mining Program