‘) = be re CASSIDY will give EAGER BEAVER aircraft the best dircctions on arcas and altitudes to sample that are available to him. These ‘dircetions will, of necessity, be in genoral torms beecuse at this late time therois practically no probability of there being an o-vortunity for point sompling, as the relatively small points contcining highly radioactive material will havo clro-dy dispersed. CiSSIDY TiO will attem to give O..GER BELVER cirersft on altitude range, such as 40 = 50,000 foct or 40 - 55,000 foct, in which material is thought to still oxist. Upon arrival in this sugcestcd areca, it is recommended th-t EGER BILVER cir- ereft follow rediac instrumont indic~tions. ec. ‘hen instrumcnts zive incdic-tions that the cirersft is in a satisfactory radioactive crea, it is recom .cnded thet the airercft_ esteblish on ovel or orbit pattern, flying tock through the s.me position fron differcnt angles. turns. This could be done, for instenco, by making timed There is sonc possibility thot visuslly the cirereft may be ablo to dctcch = radionctive crea, This would be indicated by 2 browmish colorcd area iithin the white vepor-Hike cloud, Jt this period of tine, the ares best for semling should be below and up—wind of this brovmisn colored sree, In the time period of H plus 5 to H plus 6 hours, s-smpling becones c hunt and seck proposition, ‘ith the yenerel arca outlincd, it is up to the pilot to visually seck creas that look promising, This pro- ecdrre snoule be followee until the radiation dosaze is Duilt up to that vhich-will orevide an adcquate somple,. [24