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- Research methods and measures:
- CMRR
- Document types:
- Conference papers
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Results 1 - 5 of 5
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5/1/2007 - Conference papersThis paper discusses the sources used in developing the CMRR, describes the CMRR data collection and calculation procedures, and briefly presents a number of practical mining applications in which the CMRR has played a prominent role.
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8/1/2002 - Conference papersThe purpose of this paper is to bring the mining community up to date with recent improvements and applications of the CMRR.
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8/1/2000 - Conference papersThis study involved extensive load frame and point load testing of coal measure rocks in six states. More than 10,000 test results from 908 distinct rock units were used to classify rock lithologies into categories and determine conversion factors.
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8/1/1998 - Conference papersGround conditions at 10 Australian longwall mines and two room-and-pillar mines are compared with an extensive database from U.S. mines. Comparisons include the Coal Mine Roof Rating, roof support, pillar design, and ground control conditions.
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8/1/1998 - Conference papersBased on field investigations and a U.S. coal mines database containing 12 mines and 639 roof falls, NIOSH determines the factors that influence intersection instability and provides guidelines for the safe excavation and support of intersections.
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Content source: National Institute for Occupational Safety and Health, Mining Program