Depends on which Test Ban Treaty you are referring to. The first, the LTBT or ATBT which banned tests in the atmosphere underwater and space, was signed in 1963; several progressively more restrictive treaties have been signed since then. Current treaties ban all tests except those of such low yield as to be undetectable underground. Such low yield tests are only useful for safety verifications, they are useless for development.
The Partial Test Ban Treaty, signed in 1963, prohibited nuclear testing in the atmosphere, underwater, and in space. This treaty was signed by the United States, the Soviet Union, and the United Kingdom.
It banned nuclear testing above ground. 116 countries signed the treaty.
underground
underground
underground
The Communist government of China was outraged when the USSR and the USA signed the famous test ban treaty regarding nuclear weapons. One main charge of China was that the USSR signed this treaty with the USA in order to prevent China from obtaining nuclear weapons.
On August 5, 1963, representatives of the United States, Soviet Union and Great Britain signed the Limited Nuclear Test Ban Treaty, which prohibited the testing of nuclear weapons in outer space, underwater or in the atmosphere.
That's right, the nuclear test-ban treaty was signed in 1963 if I recall correctly.
Limited Test Ban Treaty of 1963, aka the Atmospheric Test Ban Treaty
The treaty was ratified by the Senate for it to take effect
The Limited Test Ban Treaty of 1963.
The treaty that stopped nuclear testing in the atmosphere was the Partial Nuclear Test Ban Treaty, signed in 1963 by the United States, the Soviet Union, and the United Kingdom. This treaty prohibited nuclear testing in the atmosphere, underwater, and in space, helping to reduce the environmental and health risks associated with nuclear weapons testing.