On May 21st, 2024, representatives from Circomod and Scarcyclet gathered for a collaborative meeting aimed at exploring synergies and potential joint ventures between their projects. The agenda was packed, starting with introductions and concise presentations from both Circomod and Scarcyclet, laying the foundation for a robust discussion. Circomod and Scarcyclet: Co

Reyer Gerlagh, Etienne LorangCESifo, Munich, 2024,  CESifo Working Paper No. 11091   Abstract  We develop a framework for the representation of material flows in competitive equilibrium. Material balances track material flows, which adjust endogenously to economic transactions. We assume negative environmental effects of resource extraction and waste deposition and