Processes of work on the extraction of coal at the mine "October Revolution" in the city of Shakhty. Indicators of poor performance of the miners of the mine: faulty track, trolleys, blocking the passage in the mine. Posters calling for the fight against idlers and truants. Speakers speak at a meeting of miners. Shock brigades extract coal in the mine of the Oktyabrskaya Revolyutsiya mine. Public demonstration trial of Kuzin, an operator of cutting machines at the Oktyabrskaya Revolyutsiya mine: the prosecutor and witnesses speak at the trial; the judge read out the verdict: "Sentenced to two and a half years in prison for damaging various mechanisms and equipment at the mine."