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Evaluation of explosion-resistant seals, stoppings, and overcast for ventilation control in undergro

Weiss, E. S. (Eric S.)
Pittsburgh, Pa. : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, [2002] 2002

Explosion pressure design criteria for new seals in U.S. coal mines

Pittsburgh, PA : Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, 2007. 2007