Page e e eo e e e e e e e e e e e e e e e e e . e e e e e * e e e e ® e e e « e e e e e e ° e e ° ° ° e e ° e . e 2 e e e e e e e ° e e e e e e e e e e ° CHAPTER 1 INTRODUCTION e e e e e e e e e e e e e e e e ° e ° e CHAPTER 2 CASTLE e e e e e e e e e o e e ° e e e ° e e e Bravo e e e e e e e e e e ° s e e od e e e ° ° ° Romeo ° e o e e e e ° e e e eo e ° o e e e e e e 2 e 3 Koon. e e * a e e e e * ° e e e e e e e ° e ° e 2o h Union oo e© © «© © © e © @# © © @ @# @ @ @ @ @¢ @ 8 @ 2 e 5 Yankee eo e ° e e e e e ° e e e e e e e . . e e e e 2e 6 Nec tar, * ° e e ° e e e e e e o e e e e e ° e ® WORLD-WIDE FALLOUT . . . 2. «se 3.1 Castle ... 3.2 3.3 Totals for Individual Tests . ee Comparison With Total Beta Yield. CHAPTER @ @ @ 28©« eo e e e oe e e e e SPECIAL OBSERVATIONS . 2. 6 1 2 ee ee ee ee we - APPENDIX A REFERENCES e 3.) Meteorological Interpretation . . 3.5 Maximum Activity at Individusl Stations e e e oe e ee ee ee 12 15 19 * 2.2 oe ° Total. ee oer 3 2 e 1 2. 2 e CHAPTER TESTS iv 4 e 19 19 23 33 34 38 MAPS OF DAILY FALLOUT. . «2 oe 2 2 ee ee oo ewe e e e e e e e e o e es e e e e e e e e ° e e e e es e e 228 ro ABSTRACT e a ILLUSTRATIONS e e Boawr ACKNOWLEDGEMENTS ACKNOWLEDGEMENTS The work reported on here was performed under the direction of Dr, Lester Machta, Chief, Special Projects Section, Scientific Services Division, U. S. Weather Bureau. The monitoring program was established by the Health and Safety Laboratory, New York Operations Office, Atomic Energy Commission, Merril Eisenbud, Director, and that office provided the radiological data. Mr. Daniel E, Lynch of the Health and Safety Laboratory served as coordinator of the program. Many helpful suggestions were received from colleagues in the performed the laborious and painstaking plotting of data and preparation of the finished manuscript. - ive ge Special Projects Section, D, Lee Harris, Kenneth M. Nagler, Francis Pooler, Jr., and leo R, Quenneville. The staff of this section