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Construction of fixed closing structures on eight existing tunnel portals of Cologne’s city railway
Köln
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Flood protection gate
Ipswich, UK
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Flood retention reservoir
Beimbach
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Excavation confinement
Viereth, Main
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Flood protection gate
Ladenburg, Neckar
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Lock structure
Weddewarden, Bremerhaven
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Flood protection gate
Hamburg
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Lock structure
Luneplate