National Museum of Nuclear Science & History
Robley "Rob" Johnson arrived at Hanford on May 2, 1943, at the age of 35. He was one of the first repersentatives of the DuPont Company on the scene.
Otto Frisch (1904-1979) was an Austrian-born physicist. Frisch joined the Manhattan Project in 1943, but his most important contribution to the project came in 1940 in England.