Les installations artisanales romaines de SAEPINUM. Tannerie et moulin hydraulique by Brun and Leguilloux described the sinter from the mill run that it is consisted of three different stage of activity 1.cleaning of the mill from the incrustation 2.drying out of channel due to interruption in the water flow 3. erosion (weathering of sinter) surfaces due to be out of order.