Mining and industrial activities, if poorly managed, can damage the environment and leave behind contaminated soils, polluted groundwater, and waste material. The two papers in this volume illustrate the methodologies developed for selecting priority sites for remediating environmental problems due to mining. It also describes the high priority investments that would provide the greatest benefits for the available resources. The methodologies have broad application and could be used to identify priority remediation investments in other sectors where past activities have led to environmental problems.