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7/22/2014 - Contracts and cooperative agreementsA contract to develop a spray-applied polyurea coating system that would upgrade existing 20-psi approved mine seals to withstand blast pressures greater than 60 psi.
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1/1/2008 - Reports of InvestigationsThis report discusses the testing and full-scale evaluations of a recently developed carbon fiber-reinforced polymer (CFRP) reinforcement technique for upgrading existing mine ventilation seals to withstand an explosion pressure of 50 psi or greater whi...
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Content source: National Institute for Occupational Safety and Health, Mining Program