research, he has served as consultant to many companies, including Chevron, Falconbridge Ltd., MRDI, Western Mining Corporation, BHP, Diamond Fields Resources (during their involvement with Voisey’s Bay), COMINCO American, Donner Minerals, and Anzex Resources Ltd. Dr. Naldrett holds a Ph.D. from Queen’s University, an M.A. from the University of Cambridge, and an M.S. from Queen’s University. In addition, he received D.Sc. (honoris causa) awards from both Laurentian University and the University of Pretoria in 2000 and 2001, respectively. He is president of the International Mineralogical Association, a trustee of the Society of Economic Geologists Foundation, and president of the Geological Society of America.

TAMARA L. DICKINSON, study director, is a senior program officer with the National Research Council’s Board on Earth Sciences and Resources, responsible for managing the earth resources activities of the Board. She was awarded the National Academies 2002 Distinguished Service Award. She has served as program director for the Petrology and Geochemistry Program in the Division of Earth Sciences at the National Science Foundation. She has also served as discipline scientist for the Planetary Materials and Geochemistry Program at National Aeronautics and Space Administration (NASA) Headquarters. As a postdoctoral fellow at the NASA Johnson Space Center, she conducted experiments on the origin and evolution of lunar rocks and highly reduced igneous meteorites. She holds a Ph.D. and an M.S. in geology from the University of New Mexico and a B.A. in geology from the University of Northern Iowa.