The Mechanical Engineering . Encyclopedia, Volume 4-5: Machines and aggregates of metallurgical production" edited by K. In. Frolova is an outstanding publication that will become an indispensable source of knowledge for all who are interested in modern technologies in the field of mechanical engineering and metallurgy. This volume is a deep dive into the world of machines and aggregates used in metallurgical production, and offers readers a unique opportunity to get acquainted with the advanced achievements and methods used in this important industry. The book covers a wide range of topics, from the design and construction of machines to their operation and maintenance. It details the different types of equipment used in metallurgy, including furnaces, rolling mills, crushers and other aggregates. Each section is provided with up-to-date information about the principles of work, technical characteristics and current trends in the development of technologies. This makes the book not only a useful reference book, but also a fascinating read for those who want to deepen their knowledge in this area. The encyclopedia will be of interest to both students and graduate students of technical universities, as well as practicing engineers and specialists in the field of mechanical engineering and metallurgy .. It is suitable for those who are striving for professional growth, as well as those who just want to expand their horizons in understanding the complex processes taking place in metallurgical production. Readers interested in the latest technologies and innovations will find in the book a lot of information about modern developments and their application in practice. The topics raised in this edition cover not only technical aspects, but also issues of ecology, production efficiency and safety. In the context of global change and the transition to sustainable development, knowledge of how to optimize processes and minimize the negative impact on the environment becomes especially relevant. Frolov’s book offers readers not only theoretical knowledge, but also practical recommendations that can be applied in real life. Style of author and editor K. In. Frolov is distinguished by clarity and accessibility of presentation, which makes complex technical concepts understandable even for an unprepared reader. Frolov is a well-known specialist in the field of mechanical engineering, and his experience and knowledge are reflected in each section of the book. He is also the author and editor of other significant works in this field, which confirms his authority and professionalism. Encyclopedia of Mechanical Engineering . Volume 4-5: Machines and aggregates of metallurgical production" is not just a book, but a real find for everyone who wants to be aware of the latest achievements in mechanical engineering and metallurgy. It will become a reliable assistant in study and work, as well as a source of inspiration for new ideas and projects. If you are looking for high-quality literature on the topic of mechanical engineering, this encyclopedia should definitely take its rightful place on your shelf.