Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health). (2006). Super stopping: A permanent solid stopping for directing ventilation airflows in large-opening metal/nonmetal mines. U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health.
Chicago Style (17th ed.) CitationPittsburgh Research Laboratory (National Institute for Occupational Safety and Health). Super Stopping: A Permanent Solid Stopping for Directing Ventilation Airflows in Large-opening Metal/nonmetal Mines. [Pittsburgh, Pa.]: U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2006.
MLA (9th ed.) CitationPittsburgh Research Laboratory (National Institute for Occupational Safety and Health). Super Stopping: A Permanent Solid Stopping for Directing Ventilation Airflows in Large-opening Metal/nonmetal Mines. U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2006.