National Museum of Nuclear Science & History
Ray Mettelka worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Arnold Grubbe (1904-2002) was an engineer working for the civilian contractor Crane Company in Oak Ridge, Tennessee.
Allman worked at the 100 B Area at Hanford during the Manhattan Project.
Stanley Krzyck was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
