National Museum of Nuclear Science & History
Petty worked in the 100 B and D Areas at Hanford during the Manhattan Project.
Butscher worked for Stone and Webster Engineering Corporation.
Owen Chamberlain (1920-2006) was an American physicist and winner of the 1959 Nobel Prize. He joined the Manhattan Project in 1942 after his graduate studies were interrupted by World War II.
Jessen worked at the 200 East Area at Hanford during the Manhattan Project.