Officials say 13 cars of a CN Rail train derailed in northeastern Minnesota early Wednesday but without causing a spill or injury.
County officials said three of the derailed cars carried a hazardous compound, but none was spilled and there was not danger to public safety.
Canadian National spokesman Patrick Waldron said the remaining 10 derailed cars were carrying plastic pellets or were empty.
St. Louis County emergency services manager Scott Camps said the hazardous material in the derailed cars is naphthalene, best known as a main ingredient in mothballs.
The county's sheriff's office said the southbound train had a total of 107 cars, travelling from Winnipeg to Superior, Wisc.
In total, nine of the train cars carried hazardous material but only three of them derailed.
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