1. Lowell Institute for Mineral Resources, University of Arizona, Tucson, Arizona 85721-0012;
2. Political Science Unit, Luleå University of Technology, SE 97187 Luleå, Sweden;, ,
3. Department of Political Science, University of Gothenburg, SE 40530 Gothenburg, Sweden;
4. Norman B. Keevil Institute of Mining Engineering, University of British Columbia, Vancouver, V6T 1Z4 BC, Canada;
5. Sustainable Development Strategies Group, Gunnison, Colorado 81230;