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SEATTLE (AP) - An engineering firm raised a red flag more than four years ago about BP PLC's monitoring of its Alaska oil pipelines, documents show.
The draft report by Seattle's Coffman Engineers, published in November 2001, is among documents being reviewed by a federal grand jury in Anchorage that is investigating a March oil spill of more than 200,000 gallons from a pipe on the western side of the Prudhoe Bay oil field.
BP shut down part of its operations at the oil field this month after leaks and corrosion in low-pressure pipe were found on the eastern side.
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