Although circular economy policies flourish in France and elsewhere, knowledge of urban metabolism, understood as the whole flow of energy and materials for the functioning of cities, still remains incomplete. Work in this field has been the subject of renewed interest for some years (Weisz & Steinberger, 2010; Zhang, Yang & Yu, 2015), but is fragmented throughout the world. However, this concept is very usefull to understand the spatial imprit of supply and waste, and also to discuss the role of the urban mining, considered as the potential of urban waste to contribute to the dematerialization of social metabolism. https://programme.esof.eu/index.php?onglet=1&idUser=2090904