National Museum of Nuclear Science & History
Mary Schulze was a staff worker at Los Alamos during the Manhattan Project.
H. H. Denny worked for the H. K. Ferguson Company.
Martha G. Johnson was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Richard Claassen was a research assistant at the SAM Lab at Columbia University from 1944 to 1946. While there, he built and used fluidic systems to test for unusual leaks in diffuser tubes.
