National Museum of Nuclear Science & History
Robert Mackenzie “Bob” Underhill (1893-1988) was a finance officer for the University of California during the Manhattan Project.
Holt worked for Stone and Webster Engineering Corporation.
Harold B. Nilling was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Alfredo Chavez served in the 1395th Military Police Company, Aviation.
