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SUMMARY
I-Why and How does the estuary get silting up?
II-Dredging: an absolute necessity?
III-The dredging methods:
*the dredging of sediments.
*the dredging by roughness.
IV-The different types of dredgers:
*the disintegration suction dredge.
*the "dustpan" suction dredge.
*the pump dredger carrier.
*the lateral discharging dredge.
V-The advantages and drawbacks of dredging.
VI-The dredgers, full sailors.
VII-Are the dredgers ecological?
VIII-The interviews.
IX-Glossary.
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