Screeching Kilns

Screeching Kilns is a Vampire Counts resource building in Total War: Warhammer. Perhaps there is some spirit trapped within, burning in abject agony every time the kilns are lit?

Background
Screeching kilns can only be found in the potteries of Sylvania. Why they screech is a bit of mystery - perhaps the ground bones' owners are freed by the heat? Maybe there are Tomb Banshees trapped inside or some other restless spirit burning as punishment? Such a thing is not beyond the dark imaginings of Mannfred von Carstein!