i & g a i } Table of Contents Introduction Part I - Page Interpretive Reports Radium-226 by in and Notes the Diet of Two U. S. I. M. Fisenne and H. W. Keller, Laboratory, USAEC Cities Health and Safety The Quality of Radiochemical Analyses in the HASL Surface Air Sampling Program during 1968 by M. T. Kleinman and H. L. Volchok, Health and Safety Laboratory, USAEC Plutonium-239 Anomaly in the Troposphere by H. L. Volchok and P. W. Krey, Health and Safety Laboratory, USAEC Part II 1. — HASL Fallout Program Data Fallout Deposition 1.1 1.2 Monthly Precipitation 1.11 Sr-90 and Sr-89 at World Land Sites 1.12 Other Isotopes at Selected Sites Sr?9° and sr89 at Atlantic Ocean Weather Stations Appendix A II-2 and Appendix C Appendix B Appendix D 2. Radionuclides in Surface Air 3. Project Airstream II-9 4. High Altitude Balloon Sampling Program II-68 5. Radiostrontium in Milk and Tap Water 6. Sr?° in Diets 7. UNSCEAR-WHO Bone Appendix E II-4 Program - ili - II-7