HC Deb 23 July 1986 vol 102 c340
16. Mr. Dalyell

asked the Secretary of State for the Environment if, pursuant to his answer, 25 June, Official Report, column 320, he will recommend the wet, dripping water technique rather than dry blasting for cleaning all buildings for which he is responsible.

Sir George Young

No. The most appropriate method will be used in each case.

Mr. Dalyell

Is the Minister aware that this is not a joking question, as the dry blasting technique has been an absolute disaster? Is not the wet healing technique much better?

Sir George Young

I am advised by the English Heritage Commission on technical matters of this kind, and I understand that in a few cases the dry method is preferable.