Working and living conditions of the miners of the Donetsk coal basin before the revolution: miners work with pickaxes, horses transport trolleys with coal; shabby houses of miners, workers sleep on bunks. New houses, the building of the House of Culture, a bathhouse in the workers' settlement after the revolution. Electric lifts, conveyors, electric locomotives in mines. Miners work with jackhammers and cutting machines. Loading coal on foreign ships in the Mariupol port. Cars of the Gorlovka State Plant. Building and workshops of a metallurgical plant.