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Winter may be over but spring presents a whole new set of dangers on the Rocky Mountain railroad. Lethal rockslides threaten Canadian Pacific's longest and heaviest train.
A spike in the temperature threatens Rocky Mountain's shipments. The team struggle to shore up the track after mudslides and washouts devastate the rail-line.
Canadian Pacific freight crews tackle one of their most challenging loads. The team attempt to haul a 210-tonne reactor on an epic cross country journey.