The dredged material is excavated and removed using mechanical means such as grabs, buckets, cutter heads or scoops. Mechanical excavating is applied to cohesive soils. There are two methods of dredging: mechanical excavating and hydraulic excavating. Maintenance dredging is now only a basic task, while other fields are growing in demand much faster: creating new land for port and industrial development trenching, backfilling and protection work for offshore pipelines, coastal outfall pipelines and for cables laid on the sea bed environmental dredging and clean-up of contaminated sediments replenishment of beaches and coastlines, not only for coastal protection, but also for recreational uses. One of the applications meets the need to maintain minimum depths in canals and harbours by removing mud, sludge, gravel and rocks. Usage notes: often said about something unpleasant2.Dredging is a displacement of soil, carried out under water.

I wouldn't want to dredge up the past It's the media who keep dredging it up mention something unpleasant from the past 'Drag up old stories' Related Terms Dredge something up 1. an American trying to dredge up some French or German learned in high school If someone dredges up a damaging or upsetting fact about your past, they remind you of it or tell other people about it. 'Newsweek magazine dredged up some remarks which he made last year.' If someone dredges up a piece of information they learned a long time ago, or if they dredge up a distant memory, they manage to remember it. 'Robertson tried to dredge up an image of her in his mind.', 'From somewhere she dredged up a brilliant smile.' Start talking again about something that happened a long time ago, especially something unpleasant. Find something after a lot of looking Pull something up from the bottom of a river, lake etc Manage to remember something, or to feel or express an emotion, with difficulty. Usage notes: often said about something unpleasant2. Definition of dredge up in English English dictionary 1.

To dredge up