 The urban labor force increased by 12.5 million people, of whom 8.5 million were migrants from rural areas.However, the Soviet Union reached a share in 50% of the urban population only in the early 1960s.Engineers were invited from abroad, many well-known companies, such as Siemens-Schuckertwerke AG and General Electric, were involved in the work and carried out deliveries of modern equipment, a significant part of the equipment models produced in those years at Soviet factories, were copies or modifications of foreign analogues (for example, a Fordson tractor assembled at the Stalingrad Tractor Plant).