Mining Concessions and Asymmetric Information by Jean-Christophe Poudou and Lionel Thomas We study a concession contract for exploiting an exhaustible resource when a mining firm has private information about its costs. We show that the "traditional" balance between revenue and efficiency, which results in a lower level of production than with symmetric information, is not systematic in this contract. This is due to the specific depletion cost of non-renewable resources.Nous analysons le contrat de concession concernant l'exploitation d'une ressource non renouvelable lorsque l'opérateur minier détient une information privée sur ses coûts. Nous montrons que l'arbitrage " traditionnel " rente-efficacité consistant à diminuer la production pa...