SS “TAD Cine@migs ~POp--SpeREp BRT ‘enone SECHET aed a Lb . ace APPENDIX "A" t, 8. ATOMTC ENERGY COMMISSTON RESDAT SECRET | | 1958 Mar. 26 PM! 1-53 | DA CRYPTO PASSES DTG 2602202 FM CJTF SEVEN ENIWETOK MI TO DIR DIV MIL ALP USAEC WASHDC INFO COFS USAF WASHDC AFSWP WASHDC . AFOAT THIS MESSAGE IN 6 PARTS, LISTED ARE APPROACHES TO FIRING OF HIGH ALTITUDE SHOTS AND CONSIDBRATIONS OF EACH: CALCULATIONS EQUFIRING TEAK FIRST AS NOW SCHEDULED, INDICATE EYE BURN PROBABLE FOR A DISTANCE OF 435 STATUTE MILES (OUR 2115002 GAVE THES AS 370,) BASIC CHANGE DUEETO LAFERMINRORMATION FROM SHIPMAN WHICH INDICATES INCREASE IN EYE SENSITIVITY AS PUISE DURATION SHORTENS, THE 370 MILE RADIUS WAS BASED ON 150 MILLISECOND PULSE, BASED 130 MILIEZSECOND PUISE EXPECTED, 435 MILES THIS LARGER AREA INCLUDES 14 INHABITED ATOLIS WITH A TOTAL NATIVE POPULATION OR.SLIGHTLY OVER 6000 WITH 3 OTHER ATOLIS WITH AN ADDITIONAL. “.) . 1200 PEOPLE ON THE BORDER OF THE AREA, . 4 COURSES OF ACTION APPEAR WORTH CONSIDERING: A. FIRING BETWEEN 0200 AND 0500 WITH NO ANNOUNCEMENT, WARNING, OR OTHER PROTECTIVE ACTION EXCEPT AT UTERIK, RONGELAP, WOTHO AND UJELANG, 1, FAVORING THIS ACTION: TRUST TERRITORY REPRESENTATIVES HERE ESTIMATE THAT A VERY SMALL NUMBER (PERHAPS 15 TO 25) OF INDIVIDUALS MIGHT BE IN A | POSITION TO BE EXPOSED (NOT ASIEEP OR NoT UNDERCOVER) THIS WOULD INCLUDE NATIVE BOATS ANDTHE PEOPLE WHO MIGHT BE! ON DEGE. -5- Appendix "A" ‘ a a Te 7: 2S =< “ped fen SF “Peib Cie a eres Pr ReNoNSLa bb ~ FL