Einstein writes President Roosevelt suggesting possibility of “extremely powerful bombs
of a new type”
September 3, 1939
Germany invades Poland.
June 17, 1940
June 21, 1941
Germany invades Soviet Union.
December 7, 1941
Japan attacks Pearl Harbor. U.S. enters war.
Manhattan Engineering Project established to build atom bomb.
World’s first self-sustaining nuclear chain reaction at University of Chicago.
May 7, 1945
July 6, 1945
Trinity test of first atom bomb.
August 6, 1945
Bomb dropped on Hiroshima.
Augusta 9, 1945
Bomb dropped on Nagasaki.
August 14, 1945
Soviets subjugate Eastern Europe.
“An iron curtain has descended across the continent.” Winston Churchill
Soviets blockade Berlin. Allies airlift supplies to city.
Communists gain control of China.
August 29, 1949
Soviets test their first atom bomb.
January 31, 1950
President Truman orders
development of hydrogen bomb.
June 25, 1950
North Korea invades South Korea.
US launches “police action’.
June 25, 1950
President Truman asks DuPont
to design, build and operate
a new plant.
November 28, 1950
AEC public announcement of
Savannah River Plant.
February 1, 1951
Construction of Savannah River Plant begins.
Evironmental baseline study of
Savannah River begins.
All communities are completely
gone from area.
Construction force peaks at 38,582.
Heavy water production begins.
December 14, 1952
All roads entering plant closed to general public.
Dubarton residents organize first reunion.
December 28, 1953
First production reactor taken critical.
Separations canyon operations begin.
First plutonium metal delivered to AEC.
First tritium gas delivered to AEC.
Ellenton residents organize first reunion.
Dunbarton resident's first trip back home.