MINERAL RESOURCES AND SUSTAINABILITY: CHALLENGES FOR EARTH SCIENTISTS -- Copyright -- PREFACE -- Contents -- 1 INTRODUCTION -- 2 WHAT IS TO BE SUSTAINED? -- 3 DEPLETION OF MINERAL RESOURCES -- CHALLENGES CONCERNING DEPLETION -- 4 MINING AND THE ENVIRONMENT -- CHALLENGES CONCERNING THE ENVIRONMENT -- 5 PUBLIC POLICY -- REFERENCES -- APPENDIX A WORKSHOP AGENDA COMMITTEE ON EARTH RESOURCES -- OPEN SESSION -- CLOSED SESSION -- APPENDIX B WORKSHOP ATTENDANCE -- Invited Speakers -- Invited Guests -- Members of the Committee on Earth Resources -- National Research Council Staff.