National Museum of Nuclear Science & History
Francis Birch (1903-1992) was an American geophysicist. In 1942, Birch worked at the MIT Radiation Lab, which was tasked with radar development.
Kreitzberger worked in the 200 East Area at Hanford during the Manhattan Project.
John Harding worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Ross Hill worked for the United States Engineer District Office.