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

A. N. Kitchen

Y-12 Plant

A. N. Kitchen worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Kenneth Pumphrey

Los Alamos, NM

Ken Pumphrey joined the Manhattan Project at Los Alamos in 1946, where he worked as a security guard until 1948.

R. N. Reams

X-10 Graphite Reactor

R. N. Reams worked for Clinton Laboratories at the X-10 Reactor.

W. L. Trumper

Oak Ridge, TN

Trumper worked for Stone and Webster Engineering Corporation.