National Museum of Nuclear Science & History
Donald Ames joined the Manhattan Project as a G.I. at the University of Chicago in 1943. Ames worked under Nobel Prize chemist Glenn Seaborg at the Metallurgical Laboratory, where he helped determine the chemical properties of plutonium and developed a rapid method for measuring the radium concentration in solutions.
Ken Foster joined the Dayton Project in July, 1948. He worked in an assay group at the Runnymeded Playhouse in Oakwood, where he conducted studies on the radiation properties of the polonium that was being manufactured there.
E. S. Ryan, Jr. worked for the Poe Piping & Heating Company.
Butler worked at the 300 Area at Hanford during the Manhattan Project.