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Health Hazard Evaluations (HHEs)

Each month we will update this page to highlight newly released final reports and information on new and emerging hazards we are evaluating. Check back often to see what we are up to!

What's New

  • Noise and Metal Exposure Recommendations Provided to an Orthopedic Implant Manufacturer
    Although an improved ventilation system lowered airborne cobalt levels, we found surfaces contaminated with metals, an air sample of hexavalent chromium over half the NIOSH recommended limit, and noise exposures that exceeded both the OSHA and NIOSH limits. We recommended the company improve engineering controls, start a hearing conservation program, train employees to prevent exposures, and have employees with persistent work-related symptoms medically evaluated. To read the full report go to
  • NIOSH Health Hazard Evaluation Program Lead Measurement Database
    We have released a database to provide researchers and other interested stakeholders with lead measurement results collected during health hazard evaluation (HHE) surveys from 1991–2015. The database contains workplace lead measurement results from over 70 HHE reports, including over 1,200 personal lead exposure measurements and 1,900 area lead measurements. For reports posted online, the database provides a direct link to the HHE report for each of the lead measurement results. This database is an ongoing project and will be updated annually to add the most recent HHE lead measurement data. To view the database go to