TSB investigation determines the derailment caused by excessive truck hunting on the empty centre beam bulkhead flat car.
A sluggish economy and lower volumes of coal, grain and energy products could undermine the lofty 2015 earnings goals, analysts say.
Railway says it is studying a string of derailments to see if any changes are required.
Facility expected to create more than 1,000 direct and indirect jobs in the region.
Labour Minister told two sides they had to negotiate a settlement.
New rules require that at least two crew work a train transporting dangerous material such as crude oil.
Quantities would match those of the proposed Northern Gateway.
Oil extraction prices rally thanks to a cold winter and lower US inventories
Environmental groups plead with CN CEO Claude Mongeau to express opposition to plans that would ship Alberta crude west by rail.