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July 02, 2009

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The Pebble deposit is among the largest copper-gold porphyry systems, and one of the greatest stores of mineral wealth, ever discovered. The U.S. Geological Survey lists the Pebble resource lands as the most extensive mineralized system in the world.

Since acquiring Pebble in 2001, Northern Dynasty and the Pebble Partnership have expanded known mineral resources by 900%. With ~800,000 feet of drilling in ~1,000 holes, a significant proportion of known mineralization at Pebble is in measured or indicated categories.

In total, the Pebble deposit contains an estimated 72 billion lb copper, 94 million oz gold and 4.8 billion lb molybdenum, as well as quantities of silver, palladium and rhenium. It is a known mineral resource with the volumes, grades, metallurgy, geometry and potential to support a modern, long-life mine.