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Mining Publication: Design and Testing of a Nondestructive Friction Bolt Tester
Keywords: Installation
Original creation date: March 2004
Authors: LA Martin, J Goris, L Roberts
Information Circular - March 2004
Download PDF Document (0.22 MB)
NIOSHTIC2 Number: 20024629
U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2004-131, Information Circular 9469, 2004 Mar :1-6
The Spokane Research Laboratory (SRL) of the National Institute for Occupational Safety and Health (NlOSH) and Thiessen Team USA, Spokane, WA, have developed a pull claw that can be attached to any accessible friction bolt ring to test the performance (i.e., load-carrying capacity) of bolts without the use of a pull collar. This would allow true random testing of friction bolts, which need to be evaluated to determine if they are still providing an adequate level of support months or years after installation. Such support is critical to maintaining safe working conditions for underground miners.
Image of publication Design and Testing of a Nondestructive Friction Bolt TesterInformation Circular - March 2004
Download PDF Document (0.22 MB)
NIOSHTIC2 Number: 20024629
U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2004-131, Information Circular 9469, 2004 Mar :1-6
See Also
Geomechanics of Reinforced Cemented Backfill in an Underhand Stope at the Lucky Friday Mine, Mullan, Idaho
Ground and Standing Support Interaction in Tailgates of Western U.S.Longwall Mines Used in the Development of a Design Methodology Based on the Ground Reaction Curve
Make it Safer with Roof Screen
A Medium Frequency Wireless Communication System for Underground Mines
Musculoskeletal Stress on Miners Performing Roof Screening Operations
Technical Bulletin Pager Phones: Installation
Technology News 508 - NIOSH Releases New Safety Video: Make It Safer With Roof Screen
Page last reviewed: September 23, 2016
Page last updated: September 23, 2016
Content source: National Institute for Occupational Safety and Health, Mining Program
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