The goal of this work is to understand the management of heavy stone tools, first from supply of the raw material to the moment the tool is discarded. This study is based on the artefacts of three palafittic settlements: Chalain/Clairvaux (Jura), Charavines « Les Baigneurs » (Isère) and Sutz-Lattrigen « Riedstation » (Switzerland). The first line of research is chronological and is best applied to the Combe d'Ain limestone region. In the case of the “back-and-forth” mill, the choice of the raw material differs greatly between the Middle and Late Neolithic. During the earlier period the raw material is exclusively local whereas in the later period it is imported. For the Late Neolithic these tools are treated differently according to their o...