@ata are extremely aseful in the proof of a calculational aodel to produce reasonably accurate predictions. Gaama-ray dose-rate data vere lose at the two high stations because of the low geuma-ray lewel caused by burst position error ) Toe com binacion of bork e effects, p possibly rapi2 ras lon products debris, caused the dose rate to be below detectability at the tise telemtered data began to be recorded after burst. On Orange, dose-rate data were gathered at Station OR-GO, and total gamma-ray dose data were gathered at Stations OR-Go and 08-1255 (see Chapter 4). Microbarograph data are adequate to allow estinates to be made of blast parameters at any point in the atmosphere beneath burst altitude with sufficiest accuracy for most practical probless. Blast phemmena are noticeable at air- craft altitudes for a burst such as T Radio-frequency attenuation data gazherec by Project 32.3 are given ino Chapter 7. Many data are available and every attempt has been made to include all pertinent facts necessary for analysis of the data to suit particular needs. These data hsve been analyzed Sy many groups and analyses are not repeated here. A one-week meeting was held in early 1960 which exphasized che need ro wake a vigorous atte=pt to decermine the position of Sandia's Bi-Lo rockers with as much accuracy as possible.” Work on rocket posirioning was funded by DASA” This included eight sea level firings of Deacon-Arrow rockets which were as nearly as possible like those used on Jobnston Island. Numerous statistical data on the variabiliry of impulse for these motors were also exanined, as were the specific Johnston Island records. Johnston Island time-of-ilizht data, coupled with understanding gained by intensive analysis of rocket perforaance, have given considerable improvement in knowledge of the location of the rockets during the Teak ard Orange bursts. mow known with good confidence. Their altitude history in particular is This is the sost critical aspect of their flight trajectory froe the standpoint of attemation of radiofrequeacy transmissions. I: is unfortunate that the tine allwed for execution of this project was insufficient co persit procurement of traczing facilities on Jocnscon Island for these Hi-Lo rockets, However, ~wch vas learced which warraces prediceioas of radiofrequeacy blackout tises to a greater degree of accuracy Lhas pre-Teas “order So. HT Hi-Lo Yr. 1, dated July 12, 1560. a,

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