National Museum of Nuclear Science & History
Frank Marisco worked for the H. K. Ferguson Company.
Hannibal Fraga was an engineer. He joined the Manhattan Project in the fall of 1944. He worked in the inspection department at Los Alamos.
C. L. Young worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Gordon Smith was a chemical engineer in the 9812th Technical Service Unit of the U. S. Army Corps of Engineers Special Engineer Detacment at the Clinton Engineer Works in Oak Ridge.