HC Deb 29 October 1957 vol 575 cc6-7W
54. Mr. Grimond

asked the Prime Minister how the dangers from the fallout from the accident at Windscale compare with those from fall-out from our recent hydrogen bomb tests.

The Prime Minister

It is not possible to compare the long-range fall-out, mainly strontium 90, from hydrogen bomb tests, with the activity released at the Windscale incident, which was primarily the short-lived isotope of iodine.