|Description:||Hat bodies that have been stiffened with “substances similar to shellac” are hung to dry in a in a Connecticut hat making plant. The plant was part of the 1937-1938 PHS industrial hygiene and engineering study of mercury exposure and its health effects in the hatmaking industry. The photo was published as Figure 14. In USPHS Public Health Bulletin No. 263, Mercurialism and its Control in the Felt-Hat Industry, 1941.|
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.