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| | Timeline 1957 |
 | | 1957 Jan 22, Suspected "Mad Bomber" George P. Metesky, accused of planting more than 30 explosive devices in the New York City area, was arrested in Waterbury, Conn. He was later found mentally ill and committed to a mental hospital; he was released in 1973, and died in 1994 at age 90. |
 | | 1957 Jul 25, Monarchy in Tunisia was abolished in favor of a republic. |
 | | 1957 In the USSR a nuclear waste container exploded at the Mayak plant in the Chelyabinsk region of the southern Urals and 20 million curies of deadly strontium and cesium were released. |
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