. NIOSH is headquartered in Washington, DC, with research laboratories and offices in Cincinnati, OH; Morgantown, WV; Pittsburgh, PA; Spokane, WA; and Atlanta, GA. NIOSH is a professionally diverse organization with a staff of over 1,400 people representing a wide range of disciplines including epidemiology, medicine, industrial hygiene, safety, psychology, engineering, chemistry, and statistics. The director of NIOSH is John Howard. The Occupational Safety and Health Act, signed by President Ri… (More on Niosh)