When making "city gas" from coal, many chemical processes occur. In addition to the city gas that already consists of various "ingredients", many "waste products" also remained. In the lab, the composition of the city gas as well as the most important waste products was examined. After all, consistent quality was important for all end users and overall safety.
This building has stone walls, with decorative masonry and piers on the corners of the building. The plinth is made of cement, which is applied to the brickwork.
On the roof is a double-sided dormer window, centered on the ridge of the gable roof. The construction of this dormer window is completely made of wood. Both the windings and bargeboards of the head gable roof, as well as those of the gable roof of the dormer window are also made of wood.
The fascias have iron anchors. The "scars" in the masonry are due to the fact that the building has been renovated several times.