5. GEORGE SHOT! a, The expected yield of the "GEORGE" shot was so great that extremely favorable fall-out conditions were required by CUTF<3 in order to avoid any possibility of mass evacuation of personnel from the atoll. Because of this requirement, RadSafe planning criteria for favorable fall-out peltcrns were set up well in advaric © of "GEORGE"! day. Favorable fall-out pattcrns were designated as (1) MOST FAVORABLE, (2) FAVORADLE and (3) CONDITIONALLY F..voiaBLa. These were integrated with the re- sultant upper wind plots in the same way that was done on "EASY" shot. rom experi-~ ence it was found that the trend of the upper wind plots was of greater importance for firm operational decisions than actual forecasts of specific winds al specific levels. b, As a result of the technique of observing trends of the resultant winds, it appeared at H minus 30 hours (the time for critical decision by the Commander) that of the three criteria for favorable fall-out, the MOST FAVORABLE pattern would be valid, and evacuation of personnel from the atoll ceased to be an important plan~ ning consideration, This favorable trend persisted longer than usual because of a typhoon (JOAN) which hovered about, 150 miles northwest of ENIW@TOK ATOLL, moving very Slowly north-northwest. The immediate result of this distrubance was a prolonged northeastward movement of all air above the wero point. c. Heavy fall-out was predicted to be in a fifty mile sector 085° true from zero point. bearing 015° Delayed fall-out (i.c., 1.5 - 4.0) hours after H hour was predicted to occur within the same bearings at radial distance of 30 to 120 miles The mushroom was forecast to reach great heights (i.c., above 50,000 fest) and was forecast to move southeast, | d. As had been forceast, practically no fall-out occurred on any of the atoll islands. Some contamination on adjacent islands ean bo attributed to direct blast of particular matter, resumed at H plus 3 hours, With practically no fall-out, normal operations were Exclusion areas after the shot were limited to islan ds clase to zero point, plus some islands with residual contamination from "DOG" and NRASY" shots, &. kadSafe phases, in general, were normal, Some contaminated witer, up to one mile from the lagoon side of the atoll, was found near sero point isla nds of the EBERIRU GROUP but this did not hamper post-shot operations, "ITEM SHOTH Again,experience from other detonati ons of Operation GREENHOUSE was ay ae aes, O