This book addresses the need for a firm scientific basis for decision-making in the cold-region pipeline construction industry. In clear language it describes the behavior of permafrost and its effects on structures and terrain, and gives revealing accounts of the political and international aspects of related issues. The enlarged second edition maintains the easy-to-read, well-illustrated format of the original, but is brought up to date with new information and a new emphasis. The author has served as a consultant to the Canadian government on the effects of cold climates on several large northern projects.