In this place called Les Prairies and then Le Bouhet, bordering the old principalities of Stavelot-Malmedy (Horion-Hozémont) and Liège (La Gleixhe), three streams meet: the Bobesse, coming from Dommartin, the Hozémont and the Rouvroy taking their source in the localities of the same name. Property of the lords of Awirs and Haultepenne, a Preyrial mill (meadow mill) was already mentioned in 1266. In 1870, the Bouhet site underwent a significant encroachment on its land to allow the construction of the new road linking Les Awirs to Hozémont. The old road passed next to the mill and entered the undergrowth to emerge near the church of La Gleixhe. If the oil mill ceased its activities in 1849, the flour mill continued its activities until the day after the First World War.