Multidimensional Societal Targets, Risks, and Government Intervention in the Mining Industry

Abstract

We explore the impacts of commodity price volatility, the adoption of new technology and environmental risks on the long-term sustainability of a stylized mining firm and examine the implications for government policy intervention. We first analyze whether a mine should remain open or be closed when premature closing is costly due to land rehabilitation and reclamation resulting from an environmental accident. We then go on to investigate alternative resource policy instruments for by which the government may extract resource rents, examples being an ad valorem tax on output, a mining industry-specific corporate tax rate and a royalty on the amount of ore removed. Furthermore, we evaluate the potential of a number of means to correct for environmental externalities and compensate for damages that a mine causes during its lifetime, specifically a Pigou tax on effluents, fines on environmental accidents, mandatory up-front payments to an environmental liability fund and a surety bond to cover closure and reclamation costs. Our simulation results for government revenues from alternative policy packages over the lifecycle of the mine provide important information for policy implementation and the design of taxation and liability payments.