National Museum of Nuclear Science & History
H. W. Caldwell worked for the Edenfield Electric Company.
Martens worked in the 200 West Area at Hanford during the Manhattan Project.
J. P. Valliant worked for the Union Carbide & Carbon Corporation.
W. K. Black worked for the Roane-Anderson Company.
Tranquilino Armigo was a staff member at Los Alamos during the Manhattan Project.
