Photos of Ruptured West Coast Pipeline Offer Clues of Reason for Leak

LOS ANGELES (AP) — Photos of the pipeline that spilled oil on the Santa Barbara coast show extensive corrosion and provide clues about the cause of the rupture, experts said. Corrosion visible around the crack, coupled with wear documented inside the pipe, led Robert Bea, a civil engineering professor emeritus at the University of California, Berkeley, to believe the pipe burst during a pressure spike when the operator restarted pumps that had failed the morning of the May 19 spill.