§ Mr. Masonasked the Prime Minister if he will now publish a full statement setting out the scientific assessment of the dangers to health of high-altitude nuclear tests, as opposed to tests conducted in the atmosphere, and including 48W the scientific advice he has received regarding the interference with and contamination of outer-space that will result from high-altitude tests.
§ The Prime MinisterI cannot usefully add much to what I said on 8th May. The dangers to human health of tests at altitudes of the order of, say, 200-300 miles are thought to be much less than those of low altitude tests. As regards the second part of the Question, as I said on 8th May, scientific opinion is divided about the effects likely to be produced in outer space by these experiments.