The book on ' Welding Skills and Techniques' was originally published in 1988 covering different methods for welding of rails, details of speci?c techniques and quality control aspects, The book was very popular amongst ?eld engineers. During this intervening period, some of the rail Welding methods and speci?c techniques have undergone major changes. A number of new techniques have also been developed to meet the requirements of the ?eld. It was, therefore, imperative to revise the book thoroughly so that it contains the updated information on the subject matter. The book covers Flash Butt Welding, Aluminothermic Welding and Gas Pressure Welding with emphasis on the ?rst two. Apart from dealing with the basics of these methods, it covers process details, quality control and new developments, It is hoped that the book will enable Railway Engineers to improve their understanding of rail Welding. At the same time, those who are not well conversant with rail Welding, can also familiarize themselves with all facets of rail welding with the help of this book.