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Results 1 - 10 of 11
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2/14/2022 - PC softwareUse this factor of safety calculator when designing an underground mining excavation’s ground support.
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2/19/2019 - Peer reviewed journal articlesAn article discussing roof support requirements in the longwall headgate under high horizontal stress in regard to the pattern of supplemental cable bolts and the critical locations where additional supplemental support is necessary.
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1/1/2016 - Peer reviewed journal articlesAn article describing cable bolting solutions at two low-seam coal mines in similar ground conditions. Two original cable bolt based support systems and two modified systems are evaluated to estimate their ability to prevent large roof falls.
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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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4/1/2002 - Conference papersResearchers have conducted a large number of experiments on cable bolts to determine their load characteristics for different grout types, grout ratios, and cable configurations (Garford bulb, buttons, birdcage, nut cage, etc.)
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8/1/2001 - Conference papersInstrumented cable bolts developed at NIOSH's Spokane Research Laboratory were used in conjunction with existing ground control systems to monitor rock mass loads at Tg Soda Ash's trona mine in Granger, WY.
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8/1/2001 - Conference papersThe Support Technology Optimization Program (STOP) was updated to Version 2.3. This paper describes the additional features: including uncontrolled convergence into the design requirements for standing roof supports; the addition of design procedures fo...
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4/1/2000 - Conference papersResearchers 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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3/1/2000 - Conference papersInstrumented cable bolts developed at the Spokane Research Laboratory of the National Institute for Occupational Safety and Health were used in conjunction with existing ground control to monitor rock mass loads at various field sites.
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11/1/1998 - Technology NewsDevelopment of methods and tools to assist in the evaluation and selection of rock supports could reduce the number of unplanned rock falls significantly.
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Content source: National Institute for Occupational Safety and Health, Mining Program