| http://www.w3.org/ns/prov#value | - This in turn has driven demand for freight, hopper, intermodal, specialty and tank cars.In addition to fuel, these cars also transport chemicals, frac sand and other products used in the production of oil and gas.The railcar sector might be poised for even more growth if U.S. regulators decide to update the nation's fleet to make it safer.In early January, Greenbrier CEO William Furman said abou
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