The National Institute for Occupational Safety and Health (NIOSH) received a confidential employee request for a Health Hazard Evaluation (HHE) at a potato processing facility. The requesters expressed concern regarding possible health effects, especially respiratory problems, which they believed may be associated with exposures to carbon monoxide (CO), chlorine gas (Cl2), and unknown chemicals. Two site visits were conducted by NIOSH investigators. A preliminary investigation focused on the potential for Cl2 and CO exposures, and a limited number of worker interviews were conducted. During the second site visit, researchers collected data to investigate whether workers' health effects were related to bioaerosol exposures, such as bacteria, fungi, or their products. In addition, personal breathing zone (PBZ) concentrations of airborne particulates were estimated, and a health questionnaire was administrated to all available workers on two shifts.
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