National Museum of Nuclear Science & History
Leo Wojtanowski worked in a shop at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
Johnston worked at the 300 Area at Hanford during the Manhattan Project.
Walter R. Julek was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Lassila worked in the 100 B and D Areas at Hanford during the Manhattan Project.