ACKNOWLEDGMENTS
The authors would like to thank Gregory Burr, Donald Booher, Karl Feldmann, Stefanie Evans, and Ellen Galloway (NIOSH) for their contributions to this project. Analytical support was provided by Jack Pretty (NIOSH) and Bureau Veritas North America. The full HHE report can be accessed at http://www.cdc.gov/niosh/hhe/.
The findings and conclusion in this report are those of the authors and do not necessarily represent the views of the National Institute for Occupational Safety and Health. Mention of any company or product does not constitute endorsement by NIOSH.