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Florent Guillain

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Civil engineer

Florent Guillain was born on 7 February 1844 in Paris. He studied at the École polytechnique and the École des ponts-et-chaussées, where he qualified as a maritime engineer. He was assigned to the Channel ports in 1868. He made improvements to the deep water harbor of Boulogne and to the entrance of the harbor of Calais. His most important work was in Dunkirk, where he designed a sluice gate 117 metres (384 ft) long and 21 metres (69 ft) wide in 1874, and made other improvements to the harbor entrance and port basins. The new port designed by Guillain was officially opened in 1880. A submarine telegraph cable from Dunkirk to England went into service in 1881.

In 1888 Guillain was made director of Roads, Navigation and Mines in the Ministry of Public Works. In 1891 he was appointed inspector general of public works, and in 1893 was given responsibility for the national roads of France.

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