A small amount of oil leaked from ExxonMobil's Pegasus pipeline in Missouri on Tuesday, but the cleanup is nearly completed, a spokeswoman for the company said. "The release occurred from the installation of a guide wire for a power line pipe that was installed approximately 30 years ago. The guide wire was located almost directly on top of the pipeline and has worn down over the years," a spokeswoman for the Missouri Department of Natural Resources said. The same line spilled about 5,000 barrels of oil into a residential area in Arkansas last month.
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