|Description:||U.S. Public Health Service Sanitarian collects dust samples with a midget impinger at the National Gypsum Company, Baltimore, Maryland in April 1953. The company manufactured and sold many products that contained asbestos during this time. Note that the machinery and its ventilation system are covered with dust. Original caption: “Rear exhaust ventilation showing Sanitarian Joseph Connor collecting dust samples with a midget impinger. These samples will show whether a worker is ingesting more than the maximum allowable concentration of dust. Also note the overhead exhaust ventilation, the downdraft ventilation, the guards over the moving belt machinery.”|
The NIOSH Historic Photo Collection began as the “picture file” of the Industrial Hygiene Division of the U.S. Public Health Service (USPHS), c. 1930-1960. It is a unique collection of mid-20th Century images of American workers and workplaces and documents occupational safety and health research of that era. The collection consists of approximately 1,000 original photographs and schematic drawings.