Pillar and Roof Span Design Guidelines for Underground Stone Mines

By National Institute for Safety and Health, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services

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... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 1493566679
• ISBN13: 9781493566679
• Release Date: October 2013
• Publisher: Createspace Independent Publishing Platform
• Length: 76 Pages
• Weight: 0.44 lbs.
• Dimensions: 0.2" x 8.5" x 11.0"