Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Roger S. Warner, Jr.

Chief of the Fat Boy Assembly TeamTinian Island

Wendover, UT
Manhattan Project VeteranProject Alberta

Roger S. Warner, Jr. was a civilian scientist who worked as part of Project Alberta, the team that transported and assembled all the components of the two atomic bombs before the August 1945 bombings of Hiroshima and Nagasaki. Warner was the chief of the assembly group that put together the Fat Man plutonium bomb. That bomb was dropped on the Japanese city of Nagasaki on August 9, 1945.

Related Profiles

J. Robert Oppenheimer

Los Alamos, NM

J. Robert Oppenheimer (1904-1967) was an American theoretical physicist.  During the Manhattan Project, Oppenheimer was director of the Los Alamos Laboratory and responsible for the research and design of an atomic bomb.

Dixie Bigler

Y-12 Plant

Dixie Bigler worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Claude C. Gilliam

Tinian Island

Claude C. Gilliam served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 The Great Artiste.

F. R. Conklin

Y-12 Plant

F. R. Conklin worked for the Tennessee Eastman Corporation at the Y-12 Plant.