The sixth shot (Hood) was fired July 5 after a number of technical delays, Placement was in a balloon-suspended cab 1500 feet above ground level. It was confirmed that the yield was well above the highest yield shot previously fired in the Continental United States. Shot Names ; \ Les Alamos Scientific Laboratory in the 1957 series is using the | names of deceased scientists as code names for its shots, The Livermore Laboratory is using the names of mountain peaks for all of its full-scale shots in the series, ‘Two"shots of primary importance to the Department of Defense were not named for scientists cr mountain peaks. One of these is the "Priscilla" shot. Dual and Triple Capability During the 1955 series, a "dual capability" scheduling was employed for the first time,-when several times during the series two shots, one of greater sensitivity and one of lesser, were scheduled for firing on the same day. Often under weather conditions that were unacceptable ~ for firing the more sensitive shot, the lesser one could be fired. This resulted in expediting the series. The same concept has been adopted for the 1957 series, and resulted early in the series in the first (Boltzmann) and second (Franklin) shots being ready for firing on the same day. In situations involving repeated postponements, it may be that triple capability wili result, where any one of three shots might be fired depending on weather, Jn such a situation, the most sensitive shot would be fire if the projected fallout pattern were acceptable; if it could not be fired, the next shot in sensitivity would be considered for firing, and finally the least sensitive shot would be considered if neither of the other two could be fired. Yield Range of a Device Yield of an experimental device usually is not projected by the design laboratory as a specific figure, but is estimated to the Test Organization as a range from a predicted low to a predicted high figure. In some instances the variation may be rather small, as from eight to ten kilotons; kilotons, ain others it may be much larger, as from three to ten While the yield actually achieved is of course important to the design laboratory, the technical success of the experiment does not depend on whether the yield is within the high or the low range of the estimate, In evaluating public safety factors while determining whether a shot is to be fired, the Test Organization always considers the yield as if it wili be at the highest predicted kiloton level. -4l- () - a a