National Museum of Nuclear Science & History
Harlan Tyne worked for the United States Engineer District Office.
J. J. Mitchell worked for the Fercleve Corporation.
Robert Ball was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Edward Shapiro was an American scientist and Manhattan Project veteran. After receiving a Ph.D. from Purdue University, Shapiro worked as a research associate for the Manhattan Project at the Metallurgical Laboratory in Chicago and at Oak Ridge.
