- 10 The St. George, Utah Incident On May 19, 1953 a 32 kiloton nuclear shot, designated as HARRY, was fired on top of a 300 foot tower at the Nevada Test Site.!- Figure 5 shows the estimated doses that could have accrued if perso: were present and remained for a lifetime at a given location. Most of t! area shown is uninhabited - that was one of the principal reasons for selecting the testing site in southern Nevada, square miles, The original site was 64 Later this was expanded to about 1350 square miles. In addition, there is an adjacent area of about 4700 square miles that is controlled. . The highest estimated dose from this fallout was about five rads (again based on the assumption of continued occupancy of the area) to tw persons at a nearby ranch. ’* In terms of number of persons involved, St. George, Utah was affected most from the fallout from HARRY shot and is that story that will be retold. For every nuclear detonation an Advisory Panel was convened with ex perts in many fields, such as meteorology, nuclear medicine, health phys and public health, as well as those especially qualified in the study of fallout predictions. Prior to May 19, 1953, the Panel had waited patien for 72 hours until the prediction of fallout was in an acceptable sector toward the northeast. DOE ARCH At the weather briefing on the evening of May 18, 1953, the predictions were encouraging enough to keep the shot on schedule for the next