F. Robert Lesch

G. A. Hirst

Hirst worked at the 100-D Area at Hanford during the Manhattan Project.

Francis A. Pellegrino

Francis A. Pellegrino served as a sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned first to Luke the Spook and later to Big Stink.

Melvin A. Miller

Melvin A. Miller was a draftsman at the University of Chicago Met Lab. In 1946, he sketched two famous drawings of Chicago Pile-1 based on the descriptions of scientists who were present when it went critical.

Leonard Connor