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Guardian telephone exchange
Guardian Exchange was an underground telephone exchange built in Manchester in 1954. It was built together with the Anchor Exchange in Birmingham and the Kingsway exchange in London - all believed to provide hardened communications in the event of nuclear war. Today the underground site is used for telephone cabling. Constructed at a depth of 35 metres (115 ft), the tunnels are about 2 metres (80 in) in diameter. The exchange cost around £4 million (approximately £126 million in 2015 prices), part of which was funded by the United Kingdom's NATO partners.
==Use as a nuclear bunker==
The Guardian Bunker has been called the "Best kept secret in Manchester" and its existence was only outed in 1968, 14 years after initial construction.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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