Modify Selection
- Research methods and measures:
- Uniaxial compressive tests
- Document types:
- Conference papers
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Results 1 - 4 of 4
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7/1/2008 - Conference papersThis paper describes research conducted by NIOSH aimed at developing a correlation between sonic travel time logging of exploration boreholes and estimates of coal mine roof rock strength.
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7/1/2008 - Conference papersThis paper presents the results of a NIOSH study to evaluate UCS changes occurring in a broad range of weak coal measure rocks over a one-year time span.
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8/1/2004 - Conference papersAverage UCS may differ between coreholes but not be statistically significant, and widely spaced coreholes may be able to identify valid spatial trends in rock strength. The paper describes NIOSH's extensive investigation into these issues.
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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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Content source: National Institute for Occupational Safety and Health, Mining Program