National Museum of Nuclear Science & History
Holmes worked at the 300 Area at Hanford during the Manhattan Project.
Frederick Hobbs worked for the United States Engineer District Office.
James McIntosh was a draftsman at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during 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.
