The book considers underground storage of gas and oil products as a necessary element of the functioning of the country's fuel and energy complex: in a single gas supply system, in the oil product supply system and in the electricity and heat supply system. The process of underground dissolution of rock salt in a limited space, the technology of construction of mining-reservoirs and the methodology for calculating the main parameters of the mining-reservoir are considered. The main provisions of the technology of construction of tunnel and two-tier tanks are given.