"The ventilation of mountain workings" is a unique work written by A. E. Kovalev, which immerses the reader in the world of mining and engineering solutions related to ensuring safety and efficiency in underground conditions. This book will be an indispensable source of knowledge for both mining students and practitioners seeking to deepen their knowledge in the field of mining ventilation. Kovalev's book discusses in detail the key aspects of the design and organization of ventilation in mines and quarries . The author shares his long-term observations and experience, offering readers not only theoretical foundations, but also practical recommendations that can be applied in real conditions. It addresses important issues such as the choice of optimal ventilation schemes, the calculation of air exchange processes and the analysis of factors affecting air quality in underground workings. The reader will be able to learn about modern technologies used to ensure safe working conditions, as well as about new methods that can significantly improve the efficiency of ventilation systems. The book will be of interest not only to professional engineers and mining workers, but also to students of technical universities studying mining, as well as to anyone interested in industrial safety and environmental aspects of working in underground conditions. The age category of readers can vary from senior students to experienced professionals who want to update their knowledge and be aware of the latest developments in the field of ventilation. One of the key topics raised in the book is occupational safety in the mining industry. Kovalev emphasizes the importance of proper ventilation to prevent emergency situations associated with the accumulation of harmful gases and lack of oxygen He also discusses the impact of ventilation on workers' health, making the book relevant in light of current occupational health and safety requirements. Style A. E. Kovalev is distinguished by accessibility and clarity of presentation, which allows the reader to easily assimilate complex technical concepts. He uses many examples and illustrations, which makes the material more clear and understandable. Kovalev is the author of several other works on mining and engineering, and his experience in this area makes his opinions especially valuable to readers. If you are looking for literature that will help you understand the complex issues of mining ventilation, or want to learn about modern approaches to ensuring safety at work, “Mining ventilation” will be an excellent choice. The book will not only expand your knowledge, but also inspire new ideas and solutions in your professional activities. Do not miss the opportunity to immerse yourself in the world of mining with “The ventilation of mining” a work that combines theory and practice, making it an indispensable assistant for everyone who strives for success in this complex and fascinating field.