National Museum of Nuclear Science & History
Tappscott worked at the 100-F Area at Hanford during the Manhattan Project.
J. M. Herndon worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Roger Sr was a mechanical engineer having graduated from Stanford University during World War II. He and his wife, Katherine Barnes were recruited by the FBI who made contact with them at the Santa Fe training station when they were leaving town, after their honeymoon at Ghost Ranch.
