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Oil Train Safety

FILE - In this July 6, 2013 file photo, smoke rises from railway cars carrying crude oil after derailing in downtown Lac Megantic, Quebec. American Petroleum Institute President Jack Gerard said Tuesday that the oil and railroad industries are urging federal regulators to allow them as long as seven years to retrofit existing tank cars that transport highly volatile crude oil. (AP Photo/The Canadian Press, Paul Chiasson, File)

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A converted oil tanker used to help first responders learn about equipment to help them deal with a possible incident involving hazardous materials arrived in Fargo on Monday, Oct. 6, 2014. The car is similar to the ones the derailed and burned near Casselton _ 30 miles west of Fargo _ in late December. (AP Photo/Dave Kolpack)