Based on the development of querns studies these last ten years, this paper proposes a first synthesis of the evolution of querns from the Early neolithic to the Late Iron Age in the Armorican Massif (Brittany, Mayenne). Several points are discussed from raw material supply and exploitation to the evolution of milling technics and its economic consequences. Since the Early Neolithic, the development of reciprocal querns in danubian households demonstrate the importance of cereals consuming at a domestic level. On Late Neolithic and Early Bronze Age sites, "basin" querns constituate a real evolution of grinding technics and probably of food practices. Because of their high level of fragmentation, querns from the Bronze Age are difficult to reconstituate in Brittany. During La Tene, the rapid spreading of rotary querns led us discuss the existence of a new organisation and control of raw material ressources, new modes of productions on major sites (flour mill) and new ways of diffusion of querns -and probably other valued goods- in all western Europe.
