The second point on the Mining Park Trail is the place where the first treatment of the material extracted from the mine was carried out.

The metalliferous rock treatment plant was in this area where the cableway of the Sessa Gold Mine reached (see point 1). The tower that can still be seen was the trafostation. Next to this tower was a series of sheds in which the processing of the stones took place.

The metal stones were crushed with a crusher and finely ground by a ball mill. The milled stone was placed in tanks containing water to which lime and turpentine were added. The sediment that accumulated at the bottom of the pools was the mineral concentrate that was then dried and analysed in the laboratory and put into containers for sale to the gold and other metal extracting industries. The house near the cantonal road up to Beredino was the site of the laboratory.