Vereeniging (fərē´nĬkhĬng) [Afrik.,=union], city, now part of the Enfuleni local municipality, Gauteng prov., NE South Africa, on the Vaal River. An industrial center, its chief products are iron, steel, pipes, bricks and tiles, and processed lime and coal. Thermal power plants there supply electricity to nearby goldfields. The city, founded in 1892, owed its early growth to nearby coal mines. The Treaty of Vereeniging (1902), which ended the South African War, was negotiated there.