ACKNOWLEDGMENTS ’ The authors fully appreciate the efforts of Victor Bond, Robert Conard, and Charles Meinhold of Brookhaven National Laboratory to initiate this study. Nathanial Greenhouse? is to be commended for planning the meteorological and archival soil studies. 3ruce Wachholz,? Thomas McCraw, and Roger Ray of the Department of Energy are thanked for providing funding and support for the dura- tion of the work. The authors gratefully acknowledge the work of Fred Brauer of Battelle Pacific Northwest Laboratory who prepared and analyzed the archival soils. We also extend thanks to Kendall Peterson of Lawrence Livermore National Laboratory for computer simulation of the behavior of the BRAVO fallout cloud. Much calculational work was performed by Lee Kaplan,° from Yale University; the authors are grateful. The authors thank the many persons who reviewed drafts of the manuscript. These persons contributed new ideas and better procedures along with editorial : They were John Baum, Donald Borg, Eugene Cronkite, William Adams, and Andrew Hulf;~all from Brookhaven National Laboratory, and Charles Sondhaus from the University of California. © A special thanks goes to Barbara Boccia Lessard, a physician in private practice and wife of the principal investigator. Her thoughtful and scientific comment, advice, and encouragement are warmly appreciated. “Currently with Lawrence Berkely Laboratory. Currently with National Cancer Institute. SCurrently with Texas Instruments Corporation. - V<«