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1963: Limited Nuclear Test Ban Treaty

Wednesday, August 5, 2020

5 August 1963: Representatives of the US, UK, and USSR signed the Limited Nuclear Test Ban Treaty.

The Test Ban Treaty of 1963 prohibits nuclear weapons tests "or any other nuclear explosion" in the atmosphere, in outer space, and under water. While not banning tests underground, the Treaty does prohibit nuclear explosions in this environment if they cause "radioactive debris to be present outside the territorial limits of the State under whose jurisdiction or control" the explosions were conducted. In accepting limitations on testing, the nuclear powers accepted as a common goal "an end to the contamination of man's environment by radioactive substances."

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