The National Institute for Occupational Safety and Health (NIOSH) has requested that the National Academies, through the National Research Council (NRC) and the Institute of Medicine (IOM), conduct a series of reviews of its research portfolio. The charge is discussed in detail in a subsequent section, but in general it is to evaluate the relevance and impact of a NIOSH research program and to provide recommendations for future research. This report contains a review and evaluation of the NIOSH Traumatic Injury (TI) Research Program. NIOSH defines work-related traumatic injury as “any damage inflicted to the body by energy transfer during work with a short duration between exposure and the.