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International audienceIn the spatial-integrated socioeconomic model field, a multi-agent approach is appropriate for supporting applications modelled at a detailed territory scale, but it is less used than other approaches when supporting applications modelled at a larger scale. One possibility would be to have a more generic platform that is capable of supporting both levels. Moreover, at the spatial level, integration of dynamic spatial data and, in our case, spatial shape data should be reinforced so that, at any moment during a simulation, a user should be capable of exporting the temporal evolution of the spatial state as a (new) shape map, exploitable in a GIS tool. This paper aims to contribute to the improvement of these two aspects. We began the study with ADK, an existing agent platform, ending up with a new platform known as ISatEM. Our thematic interest is the field of mineral resources exploitatio

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With growing numbers of construction sites, aggregate supply in the Ile-de-France region (Paris and the surrounding area) will be a major issue in the coming years. This means that dialogue is needed between stakeholders to build and evaluate scenarios together for the future in this area of aggregate supply and waste reclamation. This work had the goal of describing, analysing and discussing the first evaluation of potential scenarios from the thematic and methodological standpoint, asking questions about issues of sustainable circularity in the aggregate sector in Ile-de-France. In the state of the art, tools for objective evaluation are being widely developed in the sector, whereas tools for subjective evaluation remain largely unexplored, hence this work. As results, we have given structure to what challenges will be raised for a circular economy for supplying aggregates in Ile-de-France. However, the challenges are not even for all of the issues, scenarios and impacts.

10 days while a mining project at the exploration stage today might only be operational in 10 years, yet the impact of this future mining operation in the current market should nevertheless be anticipated in decisions [3]. Regarding this prospective analysis of criticality, one of the questions (Q) would be: in an attempt to simultaneously reduce the economic and environmental costs along a given substance's processing chain, what are the levers (Pricing? Market share? Process?) that move the stakeholders involved at each stage? What decisions must also be taken (that can account for future events), knowing that these levers and decisions will change over time

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