Modify Selection
- Hazard prevention and control:
- Support design and selection
- Document types:
- Information Circulars
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This document presents the results of research conducted by NIOSH in cooperation with participating underground stone mines to develop generally applicable guidelines for designing stable pillars and roof spans in stone mines.
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10/1/2003 - Information CircularsThis report describes the geologic origin, association, and potential danger from the most common hazards. Discussions of weak rock include drawrock, rider coals, head coal, stackrock, and stream valley effects.
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Content source: National Institute for Occupational Safety and Health, Mining Program