June-July 1946
The Manhattan Engineer District
conducted Operation Crossroads,
detonating two shots in the Bikini
Atoll in the Marshall Islands.
August 1, 1946
Atamic Energy Act signed by President
Truman established the Atomic Energy
Commission and transferred the Amny's
Manhattan Engineer District atomic
programs and facilities to the five
member carmission.
January 1, 1947
Atomic Energy Commission, officially
began operation under Chaimman David E.
March 12, 1947
President Truman proposed U. S. aid to
Greece and Turkey, (the Truman
Doctrine) .
June 5, 1947
Plan for econamic aid to Europe
proposed by Secretary of State George
Marshall, later called the "Marshall
Plan."
April-May 1948
The Commission conducted Operation
February 1948
A camminist coup in Czechoslovakia took
June 23, 1948 .
Berlin Blockade declared by the Soviet
Union; lifted in May 1949,
August 29, 1949
Sandstone, firing three shots on
Enewetak in the Marshall Islands.
control of the government.
Soviet Union detonated its first atomic
device. President Truman announced it
on September 23.
September 30, 1949
January 31, 1950
February 2, 1950
Communist Mao Tse-Tung establishec <he
Peoples Republic of China.
President Truman announced procram to
develop the thermonuclear bomb.
Klaus Fuchs, British atomic sclent:st,
confessed to British investigators <nat
he betrayed secrets of the atamic bar
project to the Soviet Union.
June 25, 1950
North Korean troops invaded South
Korea, starting the Korean War.