It is conceivable that the reaction of a government excluded from the cartelization of a strategic exhaustible resource (and suffering from a subsequent restriction in its supply) takes the form of a depletion allowance directed at home-country extractive firms in the industry. According to federal law, a depletion allowance is a tax reduction on income proportional to the amount of reserves extracted. Presumably the aim of such a manœuver would be to speed up the rate of extraction at home (i.e. tilting the extraction profile of home-country firms towards the present) thereby relieving short-run excess demand and simultaneously reducing dependence on foreign owned and controlled reserves. (Clearly, allusion can be made to the 1973-74 OPEC oil embargo and to the subsequent policy decisions made by governments of non-OPEC oil producing countries).