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Wikipedia's[6] MOSE article states the last of the 78 gates was put in place on 30 January 2019.The consortium building Venice's MOSE flood-defence system put the last of its 78 mobile barrier gates into place across the lagoon's three inlets, nearly sixteen years after groundbreaking, though the system as a whole was still years from completion. Heavy-lift specialist Fagioli spent years floating and positioning the multi-tonne steel gates; individual gates were first raised in October 2013, and the first full test of all 78 followed on 10 July 2020.
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