Preface -- Energy Release in Nuclear Reactions, Neutrons, Fission, and Characteristics of Fission -- Critical Mass and Efficiency -- Producing Fissile Material -- Complicating Factors -- Miscellaneous Calculations -- Appendices -- Appendix A: Selected D-Values and Fission Barriers -- Appendix B: Densities, Cross-Sections and Secondary Neutron Numbers -- Appendix C: Energy and Momentum Conservation in a Two-Body Collision -- Appendix D: Energy and Momentum Conservation in a Two-Body Collision That Produces a Gamma-Ray -- Appendix E: Formal Derivation of the Bohr-Wheeler Spontaneous Fission Limit -- Appendix F: Average Neutron Escape Probability From Within a Sphere -- Appendix G: The Neutron Diffusion Equation -- Appendix H: Exercises and Answers -- Appendix I: Glossary of Symbols -- Appendix J: Further Reading -- Appendix K: Useful Constants and Conversion Factors.