John P. Wittemore

Winfield L. Sylvester

Winfield Sylvester was a staff worker at Los Alamos during the Manhattan Project.

Robert W. Henderson

Robert W. Henderson was an American engineer. He attended the University of California School of Engineering.

J. M. St. John

H. W. Brent

Brent worked at the 200 West at Hanford during the Manhattan Project.