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- Products and materials:
- Roof bolts
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- Non-tensioned full contact bolts
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- Resin bolts
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- Fully-grouted resin anchored bolts
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- Cable bolts
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Results 11 - 20 of 40
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10/1/2007 - Conference papersThis paper discusses the methods NIOSH used to identify noise sources on a roof bolting machine while drilling.
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8/1/2006 - Conference papersThis retrospective paper discusses changes in bolt types and usage over the past 24 years, pointing out some of the biggest myths and hailing the most significant advances.
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8/1/2006 - Information CircularsThis trainer's guide is designed as a reference manual. The purpose is to offer information and examples to skills trainers to assist them in structuring training for new operators of Walk-Thru roof bolting machines.
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8/1/2005 - Conference papersNIOSH continues to investigate the behavior of fully grouted roof bolts in the weak roof rock of Pittsburgh's Safety Research Coal Mine. This paper describes the results of three roof bolt studies.
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8/1/2004 - Conference papersMines with low-strength roof are much more likely to struggle with roof falls. This paper focuses on two mines in two different seams, conducting statistical analysis to determine which support combinations have proven to be most effective.
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8/1/2004 - Conference papersThe San Juan Mine and the National Institute for Occupational Safety and Health conducted a study to measure how development mining affected bolt loads.
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4/1/2004 - Reports of InvestigationsNIOSH researchers at the Spokane Research Laboratory in Spokane, WA, are investigating the physical properties of cable bolts by replacing the conventional king wire with a modified king wire on which strain gauges have been installed.
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8/1/2003 - Conference papersThis paper presents information that shows that short-encapsulation pull tests can provide the information necessary to improve ground control in variable roof conditions.
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8/1/2003 - Conference papersStanding crib supports have been applied in underground mining programs to resist large roof movements and sustain high-loads. The parameter that has not been examined and is not well understood is the effect that a crib or other types of standing supp...
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8/1/2003 - Conference papersTo measure the loading behavior of friction bolts, NIOSH researchers installed strain gauges on the interior of friction bolts and developed a miniature data acquisition system (MIDAS) that fits inside the hollow portion of the friction bolt.
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Content source: National Institute for Occupational Safety and Health, Mining Program