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- Research methods and measures:
- Roof quality
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- Technology News
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4/1/2003 - Technology NewsThe Coal Mine Roof Rating (CMRR) is a roof classification system. It was first introduced to the mining community in 1994. It has now been written to a user friendly version that can be run on any PC with a Windows operating system.
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6/1/2000 - Technology NewsThe Roof Monitoring Safety System (RMSS) introduced in late 1997 has been modified to improve durability and simplify the measurement of roof or rib movement.
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2/1/1995 - Technology NewsThe objective of this work is to develop a comprehensive, practical method for designing longwall gate entries that considers coal pillar size, mine roof quality, and artificial support in an easy-to-use computer program.
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Content source: National Institute for Occupational Safety and Health, Mining Program