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

Lavonne Osterlund

Hanford, WA

Marvin Goldberger

Chicago, IL

Marvin “Murph” Goldberger (1922-2014) was an American physicist who became President of CalTech and Director of the Institute for Advanced Study.

S.L. Rapier

T-Plant/200 Areas

Rapier worked at the 200 West area at Hanford during the Manhattan Project. 

Cossette C. Davis

Y-12 Plant

Cossette Davis worked for the Tennessee Eastman Corporation at the Y-12 Plant.