National Museum of Nuclear Science & History
S. H. Barrett worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Calderwood worked at the 200 East Area at Hanford 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.
Collins worked at the 300 Area at Hanford during the Manhattan Project.
