National Museum of Nuclear Science & History
Cannon worked for Stone and Webster Engineering Corporation.
Leonard Krouldis was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John R. Kauffman served in the 509th Headquarters and Base Services Squadron.
Julius “Osty” Ostspowicz was a glassblower in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.
