National Museum of Nuclear Science & History
H. W. Ross worked for the Tennessee Eastman Corporation at the Y-12 Plant.
O'Brien worked for Stone and Webster Engineering Corporation.
H. H. Maples worked for the Roane-Anderson Company.
Betty Mokstad was a laboratory technician in the Chemistry Division at the University of Chicago Met Lab.
Lawrence H. Johnston was an American physicist. After receiving his bachelor’s degree in physics from the University of California, Berkeley in 1940, Johnston followed his mentor Luis Alvarez to MIT.