derailment

The railroad says no injuries were reported and the cause of the accident remains under investigation.

Union Pacific is investigating what caused more than a dozen train cars to derail in Hillsdale early Monday morning.

U.S. Highway 30/287 was open.

The association says the requirement would impose undue costs and stifle automation technology.

No injuries were reported in the derailment.

National Transportation Safety Board investigators say the final recorded speed of the train before it crashed was 56 mph.

An investigation is underway.

Montana Rail Link has not released a cause for the derailment.

DeGraff says no hazardous materials were aboard the 150-car train hauling coal from Wyoming fields to the San Antonio area.