National Museum of Nuclear Science & History
MacDonald worked for Stone and Webster Engineering Corporation.
Waldrop arrived at Oak Ridge in early 1944, directly after receiving his Army basic training. At Oak Ridge, he worked at the Y-12 plant during the Manhattan Project.
A member of the Special Engineer Detachment of the U.S. Army, Ray Stein participated in the Manhattan Project at Oak Ridge and was assigned to the Y-12 Plant.
