 This is stated in a number of modern publications, according to which for the period 1929–1932 value added per hour of work in industry fell by 60% and returned to the level of 1929 only in 1952.This is explained by the emergence in the economy of chronic commodity shortages, collectivization, mass hunger, a massive influx of untrained workforce from the countryside and an increase in their labor resources by enterprises.At the same time, the specific gross national product per worker in the first 10 years of industrialisation grew by 30%.