There was one large and one small coalhouse to the east of the Lange Hütte. These buildings were used to store and keep dry the large quantities of charcoal required for the different foundry processes. The workers received some of their wages in kind as firewood.

The eastern walls of the coalhouses also serve as the perimeter walls in this area.

The foundation walls of the large coalhouse are barely recognisable now, as they were incorporated into the conversion of the building to a modern bowling alley and shooting range.