Mike Repko

Herbert M. Parker

Herbert M. Parker (1910-1984) was a British-American medical physicist. He worked at Chicago, Oak Ridge, and Hanford during the Manhattan Project, and is perhaps best known for inventing the rep (a precursor of the rad) and helping develop the rem to measure radiation dosage.

Cornelius M. Anderson

James Franck

James Franck (1882-1964) was a German physicist and winner of the 1925 Nobel Prize for Physics.   During the Manhattan Project, Franck served as Director of the Chemistry Division of the University of Chicago’s Metallurgical Laboratory.

Ernest J. Mekanas

Ernest Mekanas was a member of the Provisional Engineering Detachment at Los Alamos. Mekanas was in Los Alamos from 1943 to 1945, working primarily at the post office.