National Institute for Occupational Safety and Health (NIOSH) – links to info and publications related to CO:
The Occupational Safety and Health Act of 1970external icon established NIOSH as a research agency focused on the study of worker safety and health, and empowering employers and workers to create safe and healthy workplaces. NIOSH is part of the U.S. Centers for Disease Control and Prevention, in the U.S. Department of Health and Human Services. It has the mandate to assure “every man and woman in the Nation safe and healthful working conditions and to preserve our human resources.”
NIOSH Pocket Guide to Chemical Hazards – Carbon Monoxide CAS 630-08-0
CDC – Immediately Dangerous to Life or Health Concentrations (IDLH): Carbon monoxide
Worker Health Study Summaries – Toll Collectors & Tunnel Officers | NIOSH | CDC