Moscow. Delegates of the 6th Congress of the Comintern and Moscow workers hold a meeting in the park of culture and recreation. Podolsk. The workers of the Gosshveimashiny plant subscribe to the 2nd Industrialization loan. Kazakhstan. Builders blow up rocks in the Jarma Gorge, where the railway will pass. Peasants harvest grain manually and with agricultural machinery in the fields in the Samara province and the Kuban. Cavalrymen on a training campaign near Moscow. Operators I. Belyakov, N. Lebedev conduct alpine filming from the top of Kazbek.