National Museum of Nuclear Science & History
Hokanson worked at the 300 at Hanford during the Manhattan Project.
Downs worked in the United States Engineer District Office.
Marshall Holloway was an American physicist. He received his PhD in physics from Cornell University. In 1942, he directed a secret Manhattan Project assignment at Purdue University.
Dorothy worked at Oak Ridge during the Manhattan Project as a “calutron girl.” After her brother was killed in the attack on Pearl Harbor, she was eager to join the war effort, and did so starting in 1944.
