Original: In 1975 it unified with the neighbor communities of Gladbeck and Kirchhellen, but Gladbeck left it in 1976, leading to Kirchhellen becoming a district of Bottrop as Bottrop-Kirchhellen.
Simplified: In 1975 it was put together with the unification with the neighbor communities of Gladbeck and Kirchhellen, but Gladbeck left in 1976.