National Museum of Nuclear Science & History
John Weil was a member of the Special Engineer Detachment serving at Los Alamos from early 1943 through the end of the war.
Chalgren worked at the 200 West Area at Hanford during the Manhattan Project.
Ned McWherter served in the 1st Ordnance Squadron.
Harrison worked at the 100-B Area at Hanford during the Manhattan Project.