National Museum of Nuclear Science & History
Phelps worked in the 100 F Area at Hanford during the Manhattan Project.
George C. Hollowwa was a member of the Army Air Corps and a weapons expert. During and after World War II, he was involved in the assembly and testing of atomic weapons.
W. M. Miller worked for the United States Engineer District Office.
Collie worked in the United States Engineer District Office.
D. V. Parker worked for the Roane-Anderson Company.