HC Deb 08 November 1982 vol 31 c79W
Mr. Penhaligon

asked the Secretary of State for the Environment which areas have a proportion of the local housing stock suffering from the condition known as mundic block; how many buildings are involved; and what were the approximate dates of construction.

Sir George Young

As far as I am aware mundic blocks are peculiar to the Truro area of Cornwall where it is thought two or three hundred properties were built using mundic blocks in the late 1920s and the 1930s.