INTRODUCTION These reports are issued in order to give an early over-all picture of the recovery and data situation after Mike Shot. What data are presented here should in general be regarded with a jaundiced eye, since most of it has been determined by a very cursory gation of the records. However, some of the num investi- ee or instance, wa ball-of-fire y eee ee 1 tates should be fairly close to the final values. only statements about recovery can be made, since it may take several months to reduce the data. The reports are given in order of program. Some few projects have not been able to submit reports since their work either depends upon data collected by some other project, or is not directly connected with the immediate effects of the bomb. | Nov F* Mike Shot was fired at 0714:59.4 + 0.2 sec local time,yon ll. ‘7 _—«~,, Elugelab Island of Eniwetok Ato Ae a & Ft tee ee f coSAI” ae . éd os Details of the device and of the experiments perf rmed may, *sund in other publications, among which should be nentioned ——~ wae meeting notes of the Los Alamos Scientific Leboratory, |