The book "Instruction for the construction of keilcrants with chemical seal in the tubing of vertical shafts", created by the team of authors, is a unique and practically oriented source of knowledge for specialists in the mining and construction industries. This technical manuscript is intended for engineers, designers, builders and all those involved in the development and arrangement of vertical shafts, especially in difficult geological conditions and the need to ensure high reliability and safety. What is hidden behind such a complex name? The focus is on an innovative method of construction of keylcrans, that is, special fastening elements used to strengthen the walls of mine shafts . Particular attention is paid to the technology of chemical sealing in the tubing fastener, which allows to significantly increase the tightness and durability of the structure. The author's team describes in detail the sequence of actions, materials, equipment and features of the implementation of this method, making the book an indispensable tool for those who seek to master advanced technologies in the field of mine construction. This book is not just a collection of technical recommendations . It reveals to the reader complex engineering solutions, supported by practical experience and modern scientific approaches. It deals in detail with the choice of materials, the technology of their application, the features of chemical sealing and its impact on the safety and performance of mine shafts. Special attention is paid to the issues of environmental safety and minimization of risks associated with the use of chemicals in underground work. The book "Instruction for the construction of keilcrants with chemical seal in the tubing of vertical shafts" will be especially useful to specialists working in the field of mining, construction of underground facilities and engineering research. It is perfect for professionals with experience, as well as for students of specialized universities who want to deepen their knowledge in the field of modern methods of strengthening mine shafts. Thanks to clear presentation and step-by-step recommendations, even a novice engineer will be able to understand and apply the described technologies. The author's style of the team of authors is distinguished by accuracy, logic and practical orientation. The book contains real cases illustrating the application of methods in various conditions, which makes it a valuable tool for solving specific engineering problems. In general, this work occupies a special place among the technical literature on mining and underground construction, being a reliable assistant in the implementation of complex projects. For those who are looking for a modern solution to strengthen vertical shafts, the book will become an indispensable source of knowledge to improve the efficiency and safety of work. In an era of active development of the mining industry and increasing requirements for environmental responsibility , “Instruction for the construction of keylcrants with chemical seal in the tubing of vertical shafts” opens up new horizons for professional growth and the introduction of innovative technologies. This edition is an excellent choice for engineers and professionals seeking to keep up with best practices and ensure the reliability of their facilities at the highest level.