As the National Institute for Occupational Safety and Health (NIOSH) Nanotechnology Research Center (NTRC) marks its 20th anniversary, we celebrate the groundbreaking work of the Field Studies Team. Organized in 2006, the team began by evaluating potential workplace exposures to engineered nanomaterials. Engineered nanomaterials (those created on purpose and not incidentally) have at least one dimension between 1 and 100 nanometers. One nanometer is extremely small—one millionth of a millimeter. Materials at this tiny scale can have unique properties. The NTRC Field Studies Team is composed of industrial hygienists and engineers and has performed more than 140 on-site exposure
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