The ruins of a fine mill in Nietulisko Duże are the remains of the plant which was the final link in the so-called "continuous iron plants" in Kamienna.
Built in 1834-1846, the plant was a carefully laid out complex with an industrial settlement and a water system. It consisted of: a rolling mill, two dryers, a warehouse, a shed, a barn, an administrative building, a weight and 36 houses for workers and executives. Currently, the iron mill is a valuable monument of technology, whose highest value is a completely preserved historic water system.