National Museum of Nuclear Science & History
L. A. Castellanos worked for the J.A. Jones Construction Company.
Thomas Brown worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Irby worked at the 300 Area at Hanford during the Manhattan Project.
Dr. Karl Larsen worked at Massachusetts Institute of Technology during the Manahattan Project. While there, he conducted heavy-water research by spectrum analysis, which was one of the prerequisites to the early atomic bombs.
