1syuzh. - Donbass. Engineer Kartashev, head of the Kasaurov mine in the face. The cutting machine is working. Coal is poured from the conveyor into the trolley. 2syuzh. - Leningrad region. , Kolpino. Izhora plant: assembly of blooming No. 1, workers at work, solemn meeting. 3syuzh. - Moscow. Plant "Sharikopodshipnik": construction of a plant, German specialists - bricklayers at work. 4syuzh. -Leningrad. Plant "Sevkabel": rolling mills at the cold rolling mill. 5syuzh. - Ural. R. Kama. Steamers in the backwater, at the pier, move along the river. Access roads, warehouses of one of the ports, loaders work.