National Museum of Nuclear Science & History
H. J. Mack worked for the Edenfield Electric Company.
Dunker worked at the 100-B Area at Hanford during the Manhattan Project.
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.
