National Museum of Nuclear Science & History
MacDonald worked for Stone and Webster Engineering Corporation.
J. A. Elkins worked for the Edenfield Electric Company.
Calvin B. Popwell served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Big Stink, and he and his crew were later reassigned to Luke the Spook.
Frank Oppenheimer (1912-1985) was an American particle physicist. In 1941, Oppenheimer began work at the University of California Radiation Laboratory, where he was a group leader in uranium isotope separation under Ernest Lawrence.
L. E. Barnes worked for the Tennessee Eastman Corporation at the Y-12 Plant.
