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N.D. (AP) The National Transportation Safety Board has more answers on Monday’s train derailment and explosion near Casselton.  

Preliminary analysis shows that the grain train was traveling 28 mph before derailing while using emergency brakes. The oil train was going 42 mph when it hit the derailed grain train car on it’s track. Board member Robert Sumwalt says  investigators were able to look at video from the end of one of the locomotives.

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A broken axle has been found and will be studied to see if it played a role in the derailment and crash on Monday. Sumwalt says it’s still the early stages of the investigation.