 On 27 September 1958 Sotsmistechko was merged with its neighboring settlements (Prommaidanchyk, Zhovtneve, Peremoha, Pershotravneve, Komsomolske) into the city of Hirnyk.By that time in city were operating a cinder block factory, a complex in production of construction materials, bread factory, non-alcoholic drinks factory, a division of the construction holding "Artemzhytlobud".In 1969 in the city was built a bus inter-city station.