The coal mining of Ressaix-Mariemont-La Louvière, associated with the slag heap, began in 1910 and ended in 1959. It is currently the property of the municipality of La Louvière. The slag heap is accessible to pedestrians. It is made up of two paths: one going around the site and the other reaching its summit. Attention, steep ascent (change in height of ± 70m). The GR412, the long-distance slag heap trail, passes over part of the loop at the foot of the slag heap. fr.wikipedia.org/wiki/Terril_Albert_1er