Stock Photo - A dredger at work in Tilbury Docks, Essex, c1945-c1965. Constant dredging is necessary to keep the River Thames and its docks accessible for larger vessels.

Stock Photo: A dredger at work in Tilbury Docks, Essex, c1945-c1965. Constant dredging is necessary to keep the River Thames and its docks accessible for larger vessels.

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