HC Deb 08 June 1964 vol 696 c29W
94. Mr. John Hall

asked the Minister of Housing and Local Government and Minister for Welsh Affairs if he is aware of the rise in the percentage of sulphur dioxide in the atmosphere; and what effect this increase is likely to have on public health.

Mr. Corfield

Disregarding fluctuations caused by weather conditions there has for at least the last 10 years been no detectable trend upwards or downwards in the ground level concentration of sulphur dioxide. The second part of the Question therefore does not arise.