§ Mr. Spearingasked the Secretary of State for the Environment what investigations he has made of the most recently proved methods of dredging clay from the sea bed particularly at depths of 50 ft and over; and what estimate he has made of costs.
§ Mr. Eldon GriffithsMy Department is in close touch with the dredging industry, which has wide experience of dealing with a variety of materials, including clay. The estimates of reclamation cost laid before Parliament are based on the most economical method of reclamation, using mainly sand.