National Museum of Nuclear Science & History
Roth worked at the 200 East Area at Hanford during the Manhattan Project.
John Mendl was a member of the 1st Ordnance Squadron in the 509th Composite Group stationed on Tinian Island in the Pacific.
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.