National Museum of Nuclear Science & History
R. Althoff worked for the J.A. Jones Construction 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.
H. M. Kolodkin worked for the Roane-Anderson Company.
Davidson worked for Stone and Webster Engineering Corporation.