GEORGE H. BRIMHALL is a professor of geology in the Department of Earth and Planetary Sciences at the University of California, Berkeley, where he has taught and conducted research for nearly 25 years. Previously he taught in the Department of Earth and Planetary Sciences at Johns Hopkins University and worked as a project and underground mine geologist for the Anaconda Company. Dr. Brimhall’s research interests include digital field mapping, mining and exploration geology, ore deposit geology and geochemistry, and mineral resources issues. He currently serves on the California State Science Advisory Panel’s Commission on Teacher Credentialing. In addition, he has been active with both the Society of Economic Geologists and the Geological Society of America; he was associate editor of the Geological Society of America Bulletin from 1992 to 1995. Dr. Brimhall was elected to the National Academy of Engineering in 2001 and received the UC-Berkeley Distinguished Teaching Award in 1999. He holds a Ph.D. in geology from the University of California, Berkeley.

RODERICK G. EGGERT is a professor and the director of the Division of Economics and Business at the Colorado School of Mines. He also is the editor of Resources Policy, an international journal of mineral economics and policy. Dr. Eggert specializes in natural resources and environmental economics, especially as they relate to mineral policy, mineral markets, and mining and sustainable development. Dr. Eggert was president of the Mineral Economics and Management Society from 1996 to 1997. He was a member of the National Research Council’s Panel to Review the U.S. Geological Survey’s Mineral Resource Surveys Program Plan and a member of the Committee on Earth Resources. He has written extensively on minerals exploration, mining and the environment, and public policy toward the minerals sector. Dr. Eggert holds a Ph.D. in mineral economics and an M.S. in geochemistry and mineralogy from the Pennsylvania State University, and a B.A. in earth sciences from Dartmouth College.

JAMES M. FRANKLIN is a consulting geologist with Franklin Geosciences Ltd., specializing in deposits of volcanogenic massive sulfide, gold, and platinum group elements and Precambrian metallogeny. He is also director of Patrician Consolidated Gold Mines Ltd., Kinloch Resources Ltd., Phoenix Matachewan Ltd., the Canadian Scientific Submersible Foundation, RJK Resources Ltd., and Project Neptune, which is

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