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- Products and materials:
- Resin bolts
- Document types:
- Conference papers
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8/1/2003 - Conference papersTo measure the loading behavior of friction bolts, NIOSH researchers installed strain gauges on the interior of friction bolts and developed a miniature data acquisition system (MIDAS) that fits inside the hollow portion of the friction bolt.
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8/1/1998 - Conference papersThis paper presents the results of a case study conducted in a two-entry gateroad in a coal mine where excessive roof deformation and bolt loading resulted in failure of many roof supports.
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Content source: National Institute for Occupational Safety and Health, Mining Program