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Gregory A. Hahn received a B.A. degree in Earth Sciences from Dartmouth College and M.S. in Geology and Geological Engineering from Michigan Technological University. He has spent 30 years in exploration and mine development with the majors Anaconda, U.S. Steel, and Noranda, and with junior precious metal miner CoCa Mines, where as Chief Geological Engineer he helped bring on line and operate the Cactus and Shumake open pit heap leach gold-silver operations in southern California in the late 1980s to early 1990s. He joined Constellation as President & CEO in 1995 to shepherd the Lisbon Valley copper open pit heap leach and SX-EW processing operation through permitting, feasibility, engineering design, financing and construction, and into operation in early 2006. | 