MoscowL. Publishing house of the Academy of Sciences of the USSR. 1940. 446 p. with illus. + pasting. Hardcover. Encyclopedic format. Ivan Ivanovich Polzunov is a Russian inventor of heat engineering, the creator of the first steam power plant in Russia. His first steam engine in Russia was also the world's first two-cylinder steam engine, which for the first time in history did not require an auxiliary hydraulic drive. 1: I.I. Polzunov in the Urals. 2: The first years of work. 3: Production technique at the factories and mines of Altai. 4: Years of economic work. 5: The work of I.I. Polzunov in the years preceding the creation of the 'pairs of operating' machine (1759-1763). 6: Fire-acting machines known before the invention of I.I. Polzunov. 7: Proposals and Inventions of I.I. Polzunov. 8: Situation of I.I. Polzunov in 1763. 9: Construction of a fire-fighting machine. 10: Fire-fighting machine built by Polzunov. 11: Death of I.I. Polzunov on May 16, 1766. 12: Testing and operation of the machine. 13: The death of the Polzunov case. 14: On the causes of the death of the case of I.I. Polzunov. Applications. The book of Professor V.V. Danilevsky covers one of the most interesting periods in the history of Russian technology. Along with a detailed description of the level of development of mining and plant business in the 40-70s of the XVIII century in Russia, the author draws the figure of a talented Russian nugget technician who managed to anticipate the solution of the most important technical problems for many decades.