National Museum of Nuclear Science & History
H. B. Smith worked for the United States Engineer District Office.
Roos worked at the 300 Area and the 200 West Area at Hanford during the Manhattan Project.
Robert Penneman was an American chemist. Penneman was born in 1919 in Springfield, Illinois. He received a B.
Harper Welton was a staff worker at Los Alamos during the Manhattan Project.
