Health Hazard Evaluation Interim Report 6, September 13, 2010Interim report reissued December 2012: front and back covers, lead and contributing authors, and acknowledgments were added to the original interim report.On May 28, 2010, the National Institute for Occupational Safety and Health (NIOSH) received a request from BP for a health hazard evaluation (HHE). The request asked NIOSH to evaluate potential exposures and health effects among workers involved in Deepwater Horizon Response activities. NIOSH sent an initial team of HHE investigators on June 2, 2010, followed by additional teams.This letter is the sixth in a series of interim reports. As this information is cleared for posting, we will make it available on the NIOSH website (www...