Clay pits
The clay was dug out of the ground from clay pits and along the banks of the Rupel, after which the workers shaped the stones manually. After the bricks had dried in the drying sheds for weeks, they could go into the ovens to bake.
One of those disused clay pits has been transformed into the recreational park De Schorre. Each year, this park is the venue for the famous Tomorrowland Festival.