National Museum of Nuclear Science & History
Clarence Johnson (1912-2012) was a Canadian-born chemical engineer. He was born in Alberta, Canada on November 24, 1912 to Swedish migrant parents.
Chapman worked at the 200 West Area at Hanford during the Manhattan Project.
Icie Smith worked for the H. K. Ferguson Company.
Agnes Ryan was a staff worker at Los Alamos during the Manhattan Project.
