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Pillar and Roof Span Design Guidelines for Undergr... - a book by Human Services, Department of

Pillar and Roof Span Design Guidelines for Underground Stone Mines

Pillar and Roof Span Design Guidelines for Underground Stone Mines( )
Author: Human Services, Department of
and Prevention, Centers for
Safety and Health, National Institute
Publication Date:Oct 2013
Publisher:CreateSpace Independent Publishing Platform
Book Format:Paperback
List Price:USD $14.49
Book Description:

Underground stone mines in the United States use the room-and-pillar method of mining in generally flat-lying bedded formations. Pillar and roof span stability are two essential prerequisites for safe working conditions in room-and-pillar mines. Unstable pillars can result in rock sloughing from the pillar and can lead to the collapse of the roof if one or more pillars should fail. In addition, the roof span between pillars must be stable to provide safe access to the working areas....
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Book Details
Physical Dimensions (W X L X H):8.5 x 11 x 0.17 Inches
Book Weight:0.55 Pounds

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