CONTENTS ACKNOWIEDG EMENTS e e e ° e e ° e ° e ° e e ° ° ° e e s ° * e e e iv e eo e e ° e s e e ca ee e e e ° e e e e e e ° ° e e v ° e e °. e e e e e e ° e ° s e e e e o e e e e e e vi INTRODUCTION e e e e e * e e e cd e s 6 e ¢ e Cd ° e ¢€ 1 CASTILE e e e °° eo * . e e ° e ° . ° e e ° TLLUSTRATIONS. ABSTRACT e CHAPTER 1 CHAPTER 2 ° e e 2.1 Bravo e e eo ° e e e e ° e e . Romeo e e e e es e . eo e e e ° 2.3 Koon. e ° e ° * e . e * eo e e e Ca « s e e Ca * e . e e 2.5 Yankee, e e e e e ° e ° e e 2.6 Nectar. ° ° eo . ° e oe @ Union Total. ° e e s a . e 5 . e ® e . e ° 6 e e e e ° e ° 9 ° e * e e ° e € ° * ° ° * * e 2 12 e se ° e e id e eo e 12 e ° e 68 eo . e ° 15 e WORLD-WIDE FALLOUT. .....2 se ee reve e ° e ° e e e . e es 11 19 . 3.1 Castle 3.2 3.3 3.) Totals for Individual Tests .....-ee--e-» Comparison With Total Beta Yield. ....... 23 Meteorological Interpretation. ........ 33 3.5 . TESTS eee 2.4 CHAPTER 3 Page e 19 Maximum Activity at Individual Stations .... 3h CHAPTER SPECIAL OBSERVATIONS .. 2... 2 2 2 eee eevee er 38 APPENDIX A “MAPS REFERENCES OF DAILY eee F#Fff © FALLOUT. © © © @© © eseseef © © © © © © © © © © eo 39 © © © © © © © © © Bw © 228 © © © ACKNOWLEDGEMENTS The work reparted on here was performed under the direction of Dr. Lester Machta, Services Division, was established by Operations Office, Chief, Special Projects Section, Scientific U. S. Weather Bureau. The monitoring program the Health and Safety Laboratory, New York 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 Special Projects Section, D. Lee Harris, Kenneth M. Nagler, Francis Pooler, Jr., and leo R, Quenneville. The staff of this section performed the laborious and painstaking plotting of data and prepara- tion of the finished manuscript.