CONTENTS CHAPTER 2 . . : . . . . . . . . . . . PROCEDURES AND TEST RESULTS . . . . . : . : . . . . . . . . . . . : . . . : DISCUSSION . : . . . . . . : . Profiles Size and Shape in Crater Scaling Further Results . . . . . . . : . . . . . . . . . . . . ‘ 15 ~ 15 . 18 . . . 22 CHAPTER 4 4.1 4.2 . Hydrodynamic Variables at the Ground for a Tower Shot Scaling of Craters for Nuclear Explosions . . Procedures Results. CHAPTER 3 3.1 3.2 3.3 . Purpose. : : . . . . . . . Historical . . . . . ‘ . : . . Basic Theory . . 1.3.1 General Characteristics of a Nuclear Explosion at a 2 Soil-Air Interface . . . . 1.3.2 Geologic Structure of the Atoll at Eniwetok . . 1.3.3 1.3.4 2.1 2.2 . © 1.1 1.2 1.3 INTRODUCTION. CONCLUSIONS AND RECOMMENDATIONS . APPENDIXB . . . . . . . . . : . . ‘ . . . . . . . - 22 . 22 . * . . . Os . . : : 23 . . . . . 1. . . ILLUSTRATIONS CHAPTER 1 1.2 1.3 - 15 . . Conclusions . Recommendations APPENDIX A 1.1 J wo ee CHAPTER 1 eee ee Page INTRODUCTION Schematic Comparison of Nuclear Explosion and Smali-charge Explosion . . Reflected Pressure on the Ground vs Time for 60 Kt," 300-tt Height of Burst, at Several Horizontal Distances R; . . Ratio of Air Density in Reflected Region on the Ground to Density of Undisturbed Air vs Time for 50 Kt, 300-ft Height of Burst, at Several Horizontal Distances Ry . . . . . . . . 26