Wallace Gray Stone

E. M. Holman

Holman worked for Stone and Webster Engineering Corporation.

Luciano H. Cadriel

George L. Kehl

George Kehl was a metallurgist and professor at Columbia University’s School of Mines. He worked at Los Alamos on the Manhattan Project.

Marvin Wilkening

Marvin Wilkening, a physicist, traveled the Grand Circuit of the Manhattan Project, pursuing his specialty of measuring neutron intensity.