Introduction from NIOSH Director, John Howard, MD The National Institute for Occupational Safety and Health (NIOSH) has been at the forefront of research on working safely with nanomaterials. NIOSH leads the U.S. federal government health and safety initiative for nanotechnology coordinating research and activities through the NIOSH Nanotechnology Research Center (NTRC) established in 2004. The release of World Health Organization’s Guidelines on Protecting Workers from Potential Risks of Manufactured Nanomaterials is an important step in protecting workers worldwide from the potential risks of manufactured nanomaterials (MNMs). The World Health Assembly identified the assessment of health impacts of new technologies, work
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