|Description:||This 1948 historical photograph was provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH). The image depicted a safety engineer who was in the process of conducting a dust count on his grid-screen. Respirable dust is a concern in many industries, both as a repiratory irritant, and as a process contaminant, especially in the case of microcircuitry production.|
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.