National Museum of Nuclear Science & History
Arthur Sievert worked for Hanley & Company.
R. W. Erickson worked at the 200 West Area at Hanford during the Manhattan Project.
Piper worked for Stone and Webster Engineering Corporation.
J. C. Clemens served in the 390th Air Service Group.
Theodore Perlman was an American engineer working at the Los Alamos laboratory during the Manhattan Project.
