The half-burnt hulk of the 1840 ship General Harrison emerges from the landfill in the heart of San Francisco's Financial District at the corner of Clay and Battery Streets in September 2001. Jim was invited by friend Allen Pastron to join Allen's team from his company, Archeo-Tec, to excavate and analyze the hulk and its cargo, which had burned in a major fire in May 1851 that destroyed most of Gold Rush San Francisco and its waterfront.