Kroonstad - Seventeen miners arrested for public violence at a diamond mine near Kroonstad appeared in court on Monday, Free State police said.
The Kroonstad Magistrate's Court postponed the matter to November 26 and released them on R500 bail each, Captain Stephen Thakeng said.
Members of the Association of Mineworkers and Construction Union protested at the Lace Diamond Mine on Friday, blocking the main entrance. When police tried to negotiate with them they became violent.
Police fired rubber bullets. Four people were injured and taken to different hospitals.