The U.S. Chemical Safety Board (CSB) completed a study of combustible dust hazards in late 2006, which identified 281 combustible dust incidents between 1980 and 2005 that killed 119 workers and injured another 718. Based on these findings, the CSB recommended OSHA pursue a rulemaking on this issue. OSHA has previously addressed aspects of this risk. For example, on July 31, 2005, OSHA published the Safety and Health Information Bulletin, ‘‘Combustible Dust in Industry: Preventing and Mitigating the Effects of Fire and Explosions.’’ Additionally, OSHA implemented a Combustible Dust National Emphasis Program (NEP) on March 11, 2008, launched a new Web page, and issued several other guidance documents. However, the Agency does not have a comprehensive standard that addresses combustible dust hazards. OSHA will use the information gathered from the NEP to assist in the development of this rule.