R. L. Helgeson

Mattie Lyday

F. O. Hiser

Hiser worked at the 300 Area at Hanford during the Manhattan Project.

Paul J. Cummings

Cummings worked for Stone and Webster Engineering Corporation.

John L. Kuranz

John L. Kuranz (1921-1995) was an American engineer, physicist, and inventor.  During the Manhattan Project, Kuranz was a member of the Special Engineer Detachment at the University of Chicago Met Lab.