The foundation of modern Sievierodonetsk is closely connected with the beginning of construction of the Lysychansk Nitrogen Fertilizer Plant within the limits of the city of Lysychansk in 1934. Donets itself was already combined with Lysychansk. The first settlement of workers on the construction site was Liskhimstroi, near by Donets. In September 1935, the first school was opened in the settlement, a silicate brick plant started production, and the first three residential two-story houses were built. In 1940, there were 47 houses, a school, a club, a kindergarten, a nursery, and 10 buildings of a chemical combine in Liskhimstroi.