An ExxonMobil contractor cleans up oil along the banks of the Yellowstone River in Billings, Mont., Sunday, July 3, 2011. A company pipeline about 20 miles upriver near Laurel, Mont., ruptured and spilled an estimated 1,000 barrels of crude into the Yellowstone on Saturday. (AP Photo/Matthew Brown)
LAUREL, Mont. (AP) — An oil pipeline that spewed tens of thousands of gallons of crude oil into Montana’s Yellowstone River was temporarily shut down in May because of concerns over rising waters, and regulators twice in the last year warned Exxon Mobil of several safety violations along the line.
Exxon Mobil officials estimated that up to 1,000 barrels, or 42,000 gallons, spilled late Friday night before
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