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1945 Nuclear testing: The Trinity Test, the first test of an atomic bomb
, using 6 kilograms of plutonium, succeeds in detonating, unleashing an explosion equivalent to that of 19 kilotons of TNT.
1946 Nuclear testing: In the first underwater test of the atomic bomb, the surplus USS ''Saratoga'' is sunk near Bikini Atoll
in the Pacific Ocean
when the United States
detonates the "Baker Day" devi
1946 Cold War
: India
n Prime Minister Jawaharlal Nehru
appeals to the United States
and the Soviet Union
to end nuclear testing and to start nuclear disarmament, stating that such an action would "save humanity from the ultimate disaster."
1952 Nuclear testing: Operation Ivy - The United States
successfully detonates the first hydrogen bomb, codenamed "Mike", at Eniwetok Atoll in the Marshall Islands
in the central Pacific Ocean
, with a yield of 10.4 megatons.
1953 Nuclear testing: At the Nevada Test Site
, the United States
conducts its first and only nuclear artillery test.
1954 Nuclear testing: Officials announce that an American hydrogen bomb test had been conducted on Bikini Atoll
in the Pacific Ocean
.
1956 Nuclear testing: In the Pacific Ocean
, Bikini Atoll
is nearly obliterated by the first airborne explosion of a hydrogen bomb.
1960 February 13 — Nuclear testing: France
tests its first atomic bomb in the Sahara
.
1961 Nuclear testing: The Soviet Union
detonates a 58 megaton yield hydrogen bomb known as Tsar Bomba over Novaya Zemlya. It remains the largest ever (man-made) explosion.
1962 Nuclear testing: The "Small Boy" test shot Little Feller I becomes the last atmospheric test detonation at the Nevada Test Site
.
1996 President Jacques Chirac
announces a "definitive end" to French nuclear testing.
1998 Nuclear testing: In response to a series of Indian
nuclear tests, Pakistan
explodes 5 nuclear devices of its own in the Chaghai hills of Baluchistan, prompting the United States
, Japan
and other nations to impose economic sanctions.
1998 Nuclear testing: Pakistan
conducts 1 more nuclear explosion following its first test.
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