This book contains the following chapters: Soil Dynamics: An Overview (Gazetas, G); Simple Physical Methods for Foundation Impedances (Gazetas, G); Dynamic Behavior of Axially and Laterally Loaded Piles and Pile Groups (Banerjee, PK and Sen, R); Experimental Studies of the Dynamic Behavior of Piles and Pile Groups (Novak, M); Dynamic Consolidation of Nearly Saturated Granular Media (Vardoulakis, I and Beskos, DE); Surface Disturbance Due to Underground Explosions (Manolis, GD, Ahmad, S and Banerjee, PK); The Discrete Element Method in Geotechnical Engineering (Mustoe, GG, Williams, JR and Hocking, G). (TRRL)