HC Deb 01 August 1972 vol 842 c106W
Mrs. Monks

asked the Secretary of State for the Environment (1) what plans he has to alleviate the current shortage in building materials which is likely to increase because of the non-production of clinker ash;

(2) what long-term plans he has to find a substitute for clinker ash, the source of which is coming to an end, as a lightweight aggregate.

Mr. Amery

I am aware that supplies of clinker ash are declining. Alternatives are available but I am considering whether further investigations need to be made into possible replacements.