Cleanup continues as Exxon Mobile tries to determine the scope of the oil spill in Montana's Yellowstone River. Rising waters due to snow melt could make it difficult for crews to get to some affected areas. Last week, a 12-inch pipeline carrying crude oil burst upstream of a refinery in Billings.
Montana Assesses Oil Spill In Yellowstone River
By Emilie Ritter • Jul 6, 2011