National Museum of Nuclear Science & History
Robert Byrd worked for the Poe Piping & Heating Company.
Franklin MacGregor served as a second lieutenant in the 393rd Bombardment Squadron. He was regularly assigned to the B-29 Top Secret.
Warren H. Burgus was a research assistant in the Metallurgical Laboratory (“Met Lab”) at the University of Chicago during the Manhattan Project.
Smith worked at the 200 West Area at Hanford during the Manhattan Project.