HC Deb 18 April 1957 vol 568 cc233-4W
Mr. Hastings

asked the Prime Minister whether he will give an approximate estimate of the amount of strontium 90 in the fall-out of one of the new fission-fusion bombs compared with that produced when a thermo-nuclear bomb of equal destructive power is discharged.

The Prime Minister

It would not be in the public interest to go into more detail than my statement on this subject in the debate on 1st April.