Evaluation of explosion-resistant seals, stoppings, and overcast for ventilation control in underground coal mining [electronic resource] / by Eric S. Weiss, Kenneth L. Cashdollar, and Michael J. Sapko.
Imprint
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]
