§ Mr. D. Priceasked the Prime Minister whether he is aware that underground explosions of conventional explosives are to be carried out in the United States of America in order to acquire information of importance to the Geneva talks on suspension of nuclear weapon tests; and what similar action is proposed in the United Kingdom.
§ The Prime MinisterThe United States Government have announced that they intend to carry out small underground firings of conventional explosives in a Louisiana salt mine during the coming months, in order to acquire information about the detectability of small underground explosions. Her Majesty's Government have decided that similar tests should be carried out in the United Kingdom. It is not sufficient to rely on one set of tests, as the degree of detectability may be materially affected by differing geological conditions. Comparison of results of British and American tests will give some indication as to how important this factor may be, and will thereby assist the Geneva experts in reaching agreement on the question whether there can be an effective system of control of small underground explosions.
I am not in a position, until all the necessary consultations have been completed, to inform the House where and when the firings will take place in the United Kingdom. Every possible precaution will be taken to ensure that there is no damage to persons or property; and I should re-emphasise that no nuclear explosive will be used and therefore there will be no release of radioactivity.