The new classification of solid mineral reserves, based on the project principle of stock assessment, essentially creates a new field of opportunities for both subsoil users and the state. First, it creates new opportunities in terms of assessing investment opportunities, opening up new sources of financing; secondly, showing the state a real picture of the provision of economically significant mineral reserves, creates the basis for making informed and economically sound management decisions both in the sphere of the concept of reproduction of the mineral and raw materials base, and in the field of tax and other regulation of its development.