qe UNA Se Ee 6 a DRAFT ADVISORY BUWLLETIN NO, {DATE ) TO: STATE AND LOCAL CIVIL DEFENSE DIRECTORS SUBJECT: RESIDUAL RADIATION IN RELATION TO CIVILIDEFENSE I. Purpose The purpose of this Advisory Bulletin is qo revise Advisory Bulletin No. 72, issued in 1951, to summarize information on residual radiation with particular reference to state interim FCDA policy recommendations in re llout, and to to civil defense plans and operations. II. General Statement Recent developments in nuclear weapons ha probability that serious amounts of radiation fr experienced in addition to the blast and thermal increased the fallout may be Effects. Previous civil defense thinking and planning will not havelto be abandoned, but rather must be re-evaluated, broadened, and tensified. Civil defense preparations must continue to contemplateJinitial radiation problems, the smaller weapons, non-contaminating tions with little or no warning time and all of t which have previously confronted planners. pursts, detonaother problems The increased atten- tion to fallout, which is by no means a new probl (see "Effects of Atomic Weapons", 1950, Chapter VIII), re-emphadizes the fact that civil defense must provide a vartety of specified operational capabilities to meet a variety of situations, III. Discussion Initial radiation (the gamma rays and neutyions released instantaneously with the explosion) produced by a Barge nuclear weapon detonated on or near the ground does not present a serious nazard beyond the area where heat and blast are off CONFIRMED TO BE UNCLASSIFIED aY THORITY OF DOLIOC ED BY 1) GATE ’ - 4 - DOE ARCHIVES Seer 7 TT OT t greater concern. . mf OO : UNL sa es tw