§ Mr. Dalyell
asked the Secretary of State for the Environment what research he is doing into modern methods of sewage processing, in relation to the production 258W of inert material, which is damaging to British industry.
§ Mr. Eldon Griffiths
None. I am not aware that inert material produced in the course of sewage treatment is damaging British rivers. If the hon. Member has a particular problem in mind, perhaps he will write to me.