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Mine operators and Mine Safety and Health Administration inspectors use portable gas monitors in underground mines to measure worker exposure to various gases such as methane, carbon monoxide, and nitrogen dioxide (NO2). Even in relatively small concentrations, NO2 can produce harmful side effects in underground workers. Learn about a study of gas concentrations in two portable gas monitors.
Suggested citation
NIOSH [2005]. Nitrogen dioxide calibration standards for portable monitors. By Chilton JE, Timko RJ, Chuhta EJ. Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2006-104.
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