Did you know that on October 1st 1966 Zwartberg was the first of the seven Limburg mines to be closed? Industrial heritage was not a hot topic at the time so the whole plant was mercilessly razed to the ground. However, to commemorate it a mine monument was placed on the concrete slab which covers Shaft II. It features five mineworkers standing on and around the symbolic headframes. They embody the men who came to work in the mine from every corner of Belgium and Europe. Their descendants made the Zwartberg district their home and still live there today.