The book is exhaustively upgraded and improved to incorporate the syllabi of various universities in India. It is specifically designed to serve the basic text for undergraduate course in "Industrial Safety and Environment" of Punjab Technical University, Jalandhar. To make the book more useful new chapter on Ergonomics has been added and existing chapters have been thoroughly revised and enlarged. This book will also be helpful for all people involved in safety activities of the industry including managers, engineers, consultants etc. The book is written in a simple and easy-to-follow language, so that every student can grasp the subject by self-study.