Bressan announces to Hennebeau that the strike has resumed. He wants to contact Lille so that the gendarmerie can be sent as reinforcements and prevent other miners from stopping work in turn, but the director has another idea in mind. Victor Deneulin puts pressure on Antoine to encourage his colleagues to go back down to the mine. Furious, the strikers go to the Jean Bart pit, where activity has resumed, attack the installations and those they consider traitors to the cause.—Canon y mus
Etienne hides to escape the gendarmes and Bressan, who wants at all costs to arrest the man he thinks is the leader of the strikers. Hennebeau calls on Belgian workers to restart production. The minors are outraged and attack the newcomers, placed under the protection of the police. Elsewhere, Alzire, one of the Maheu's daughters, falls seriously ill.—Canon y mus