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Health Hazard Evaluations (HHEs)

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All NIOSH Health Hazard Evaluation reports and other NIOSH publications are available at no cost. You can either download a copy of the publication from the website or contact us for a copy. For HHE reports, please send an email to Information about all other NIOSH publications is available at

We carefully review our reports prior to publication, but we do make errors from time to time. We regret any typographical or other minor errors that you might find. If you find a substantive factual or data-related error, let us know. Please send an email to with the report number (ex. HHE 2013-0500-7500), the authors' names, the error you are reporting, and the page number of the error. We will look into your comments, fix confirmed errors, and repost the report. Thank you for your interest in the HHE Program.