FILE - This Nov. 6, 2013, file photo shows a BNSF Railway train hauling crude oil near Wolf Point, Mont. Thousands of older rail tank cars that carry crude oil would be phased out within two years under regulations proposed in response to a series of fiery train crashes over the past year. Transportation Secretary Anthony Foxx said the government's testing of crude oil from the Bakken region of North Dakota and Montana shows the oil is on the high end of a range of volatility compared with other crude oils, meaning it's more likely to ignite if spilled. (AP Photo/Matthew Brown, File)
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