involved in any tests, but for the promotion and safe utilization of the peaceful uses of this new source of energy which holds such great promise for benefiting all mankind, I also should like to take this opportunity to endorse your introductory statement, Mr, Chairman, about the great importance of our weapons testing program as it involves our ability to defend ourselves against atomic attack, Since the Atomic Energy Commission's frank and detailed report of February 15 on the effects of high-yield nuclear explosions, there have been misapprehensions and speculation in some quarters which have tended to confuse the effects described in that report with those of the atomic tests currently being conducted in Nevada, The February 15th report dealt only with the March 1, 1954, explosion of a so-called H-bomb at Bikini ato’.i in the Pacific, The Bikini device produced an explosive force equal to millions of tons of TNT an’ deposited its radioactive fallout over an area of several thousand square miles, Such high-yield thermo- nuclear weapons as the one which formed the basis of the February 15 report are not tested in Nevada cr elsewhere within the continental United States. Therefore, the effects described in