National Museum of Nuclear Science & History
Donald Flanders was an American mathematician who worked on the Manhattan Project at Los Alamos. Flanders was a group leader in the Theoretical Division headed by Hans Bethe.
Stanley G. Steinke was a second lieutenant in the 393rd Bombardment Squadron of the 509th Composite Group.
Rex Edward Keller was a member of the Special Engineering Detachment, assigned to work in Seth Neddermeyer’s chemistry group at Los Alamos.