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Mich. oil pipeline shut down for work before spill
Federal regulators say a company shut down a Michigan pipeline for planned maintenance hours before 911 calls about odors in the area where a massive oil spill was reported the next day.
National Transportation Safety Board officials told reporters Monday that Enbridge Inc. shut down its Calhoun County oil pipeline about 6 p.m. July 25. About three hours later, calls started coming in about gas odors in the Marshall area.