Charles W. Mignon

C. C. Harrison

C. C. Harrison worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Richard L. Thomas

Walter M. Longfelt

Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

William L. Fink

William L. Fink (1896-1992) was an American metallurgist. After obtaining his bachelor’s and master’s degrees in engineering and a Ph.