National Museum of Nuclear Science & History
John Horan worked for the United States Engineer District Office.
Pierce worked for Stone and Webster Engineering Corporation.
Holman worked at the 300 Area at Hanford during the Manhattan Project.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
Richard Smith worked for the United States Engineer District Office.
