Resources. He received his B.A. and M.A. from Dartmouth College and his Ph.D. from Harvard University.

ANNE C.BALDRIGE has worked in environmental impact evaluations and regulatory compliance in the mining industry in the United States and internationally for the last 20 years. Most recently, she was vice-president for environmental and governmental affairs, Battle Mountain Gold Company, where she helped develop a mining regulatory framework for Bolivia and submitted the first environmental impact assessment for a large operation under the new regulation. Additionally, she was responsible for the initial permitting of a mine under one of the most complex permitting scenarios in the United States, which included four federal agencies, American Indian interests, more than a dozen state and local agencies, and significant opposition to the project. She previously served as an associate with Colder Associates, Inc., principal of EIC Corporation, division head of Steffen, Robertson, and Kirsten, and reclamation specialist with the State of Colorado. Ms. Baldrige was awarded a B.S. in geology from the University of Pittsburgh and a M.B.A. in finance and accounting from Regis University.

PAUL B.BARTON, JR., recently retired from the U.S. Geological Survey. His research focuses on the genesis of mineral deposits, chemical and physical nature of ore-forming fluids, phase relations between minerals, thermodynamic properties of minerals, long-range availability of resources, and geochemistry. He was president of the Mineralogical Society of America in 1986 and president of the Society of Economic Geologists in 1979. He is a member of the National Academy of Sciences, the NRC Board on Earth Sciences and Resources, and the NRC Committee on Earth Resources.

EDWIN H.CLARK II is president of Clean Sites, Inc., in Alexandria, Virginia. He is the former secretary of natural resources and environmental control for the State of Delaware, vice-president of the Conservation Foundation, and associate assistant administrator for pesticides and toxic substances in the U.S. EPA. He holds a Ph.D. in applied economics from Princeton University. He has served as a member of the NRC Board on Environmental Studies and Toxicology.

DONALD W.GENTRY is president and chief executive officer of PolyMet Mining Corporation. From 1972 to 1998, he was on the faculty of the Colorado School of Mines, where he served as professor of mining engineering, head of the Mining Engineering Department, and dean of engineering and undergraduate studies. He has served as president of the

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