National Museum of Nuclear Science & History
R. B. Cathie worked for the Roane-Anderson Company.
Evans worked in the United States Engineer District Office.
Thomas Farrell (1891 – 1967) was a major general in the US Army. Farrell was hand-picked by General Groves to serve as his deputy, or as the Deputy Commanding General of the Manhattan Project.
Clarence Johnson (1912-2012) was a Canadian-born chemical engineer. He was born in Alberta, Canada on November 24, 1912 to Swedish migrant parents.
