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- Hazard prevention and control:
- Ground control
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- Span design
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- Entry design
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- Roof beam design
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- Skin control
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- Slope design
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- Highwall design
- Document types:
- Information Circulars
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Multiple-seam interactions are a major ground control hazard in many U.S. underground coal mines. NIOSH has been conducting research to develop better techniques for predicting the location and severity of multiple-seam interactions.
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1/1/1987 - Information CircularsInformation was collected at 5 bump-prone mines. Among the findings, two geologic conditions have been found to cause bumps in the eastern U.S.: relatively thick overburden and extremely rigid strata immediately above and below the mine coalbed.
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Content source: National Institute for Occupational Safety and Health, Mining Program