National Museum of Nuclear Science & History
P. D. Simpson worked for the Poe Piping & Heating Company.
Philipp Klein was a part-time switchboard operator in the SAM Lab while studying chemical engineering at Columbia University.
Olga M. Klicek was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. R. Poling worked for the United States Engineer District Office.
C. J. Meyer worked for the Roane-Anderson Company.
