National Museum of Nuclear Science & History
R. L. Plowden worked for the J.A. Jones Construction Company.
Pechar worked in the 300 Area at Hanford during the Manhattan Project.
John Brill was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Arthur E. Josephson served in the 390th Air Service Group.
Cardea Hubbard was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
