National Museum of Nuclear Science & History
Robert Ball was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Jack Busby was a Military Policeman from Waco, Texas, and served at Oak Ridge, TN as part of the Manhattan Project.
Pechar worked in the 300 Area at Hanford during the Manhattan Project.
H. L. Hull worked for the Tennessee Eastman Corporation at the Y-12 Plant.