National Museum of Nuclear Science & History
Arthur Sievert worked for Hanley & Company.
Joe L. Filichia served in the 603rd Air Engineering Squadron.
Schroeder worked at the 100-D Area at Hanford during the Manhattan Project.
Harry Daghlian (1921-1945) was an American physicist. He died in 1945 from radiation poisoning after a criticality accident at Los Alamos.
John W. Burr was a research assistant in the Metallurgical Laboratory (“Met Lab”) at the University of Chicago during the Manhattan Project.