National Museum of Nuclear Science & History
Leo Safranski was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Kelley worked in the 300 Area at Hanford during the Manhattan Project.
John Attanas was born in 1920 and grew up on farm near Kingston, New York. After graduating from Georgia Tech in 1942 with a degree in chemical engineering, he worked in a chemistry lab at the Remington Arms Company.
Ralph Nelson was a staff worker at Los Alamos during the Manhattan Project.
Stalder worked for Stone and Webster Engineering Corporation.