TORONTO — The oil carried by a freight train that derailed and exploded in Quebec this year had been misclassified as a less dangerous type of crude, Canadian officials said Wednesday, and they urged U.S. and Canadian regulators to ensure dangerous goods are accurately labeled.
Forty-seven people were killed in the July disaster when the unattended train rolled away and derailed in the town of Lac-Megantic near the Maine border and several of its oil cars exploded. The downtown was destroyed.
The train’s shipment of North Dakota oil was mislabeled as a ‘‘Group 3’’ flammable liquid, when it should have been given a more explosive ‘‘Group 2’’ classification, the Canadian transportation safety board’s chief investigator, Donald Ross, said.
Asked if proper labeling would have changed what happened, Ross said the work of the board is not done. Full story for BostonGlobe.com subscribers.