First appearing in the Middle Ages, mills were initially used to grind grain. They were later progressively used to extract oil, run the smithy, hammer iron, saw wood and tan leather. Using a vertical driving wheel became more widespread and gear systems multiplied their power and their production. To operate, mills only needed a waterway and soon set up along the smallest rivers such as here and along the Lemme. (PNRHJ - Collection patrimoine, “Heritage collection”)