Kazakhstan. Kostanay region. September 1957. Territory of the Sokolovsko-Sarbayskoye field. Production processes of mining, loading and transportation of ore. The ESh 14-75 walking excavator digs a trench. Excavator VP Aleksandrov at work. Construction of a hydroelectric complex on the Tobol River, an enrichment plant. The old builders' settlement: barracks, dugouts, tents. Construction of the town of Rudny. Plumbing laying. Saplings of trees. Score. House of Culture. New houses on Pionerskaya street.