Upstream from Gan, on the Néez, there were several flour mills and even a tobacco mill. A fine example of redevelopment to visit: the "Domaine le Vieux Moulin" intended to host private or professional events. Later, the water from the Néez was used for industry (marble, spinning, paper). As for the water from the canals that surrounded the city, it was used for industry: in 1864, Pierre Vignot used it to operate his plaster factory and his sawmill.