§ 19. Mr. Maddan
asked the Parliamentary Secretary to the Ministry of Works, as representing the Lord President 188 of the Council, what research is being undertaken by the Department of Scientific and Industrial Research into the silting of major ports in Great Britain.
§ Mr. H. Nicholls
The Hydraulics Research Station has been responsible, with the Port of London Authority, for a comprehensive study of the causes of silting in the Thames Estuary and of possible remedial measures. It is making a similar study of the Mersey Estuary and the approaches to Liverpool Docks. Also it has recently commenced an investigation on a smaller scale into silting at Avonmouth Docks.
§ Mr. Nicholls
The main result so far has been to produce a new method of dredging, and the amount of dredging that has to be carried out has been very much reduced as a consequence.