ADGAIR TaSX GROUP 7.4, PROVISIO.4L o- APO 187, c/o Postucster San Francisco, California TGOP ‘ EHCRANDUR FOR: SURIIOT : 1. 10 Avril 1954 Director of Oncrations Investigation of 2ffects of Pl nnoed Puture Shets on Tes Croup 7.4 Sauiprent cand Facilitics Operations Analysis was requested to study some of the prolens which must be faced by Tast "croup 7.4 in plenmving for veapons or devices Aeton. ted at various locetions at Uaivetok Atoll. ‘Snecifically, tie problens to be investigztcd were: ae d At the levels of overvressure and zust velocity cnticip.ted frem plenned future shots, whict ~easures must te tolten to cofecny r t d aireraft cn th avoided? screund from dencze? b. Under the some conditions, how can camuge to the hengor Te o: Cc. ‘tut measures must be t ken to -revent dainye by the <nti- ahr w ciscted water wove? 2. The future shot to be considered, their locations, and estin: ted roaxiinm yields were: ae Je J Ay. zg Cy at Site RUDY, ct Site PLORA at Site FLORA, 2 oi é a Site RUTY is 16.9 navtiec] miles from the center of FRID rumcy, (2Crater) is 21.0 neutical miles distant, 3. Tite FLO The folloving ov-rprecsures and gust velocitics would Ge exectec shit lcestions and yiclds montionsd v re center of FR°D runvay for the m1 2 above: