This book consists of four chapters as follows: Chapter 1 on the fundamentals of life cycle analysis, Chapter 2 on LCA of metals and its relationship with recycling, Chapter 3 deals with the application of life cycle analysis to obtaining brick from car wash sludge and Chapter 4 refers to the case Life Cycle Analysis (LCA) of brick manufacturing.At the end of each chapter is given the recommended bibliography to broaden and deepen the topics according to your requirements of the life cycle of industrial processes, and also are annexed a glossary of terms, applicative tools App related to life cycle of products and processes, the 7Rs of the life cycle analysis procedure and statistics of the environmental impact of the stages involved in a life cycle analysis; in this case applied to the manufacture of bricks.