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ExxonMobil pipe spills oil into Yellowstone River

Larry Mayer / The Billings Gazette via AP

Oil swirls in a flooded gravel pit in Lockwood, Mont., after a pipeline break early Saturday, July 2. The ExxonMobil pipeline that runs under the Yellowstone River near Billings in south-central Montana ruptured and dumped an unknown amount of oil into the waterway, prompting temporary evacuations along the river.

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