Canadian National Railways: Available evidence indicates that the July 5 train derailment accident was caused by thermal expansion, deformation, and misalignment of the railroad tracks. The company believes that the train derailment was not caused by driving speed, train scheduling, or mechanical failure.

Canadian National Railways: Available evidence indicates that the July 5 train derailment accident was caused by thermal expansion, deformation, and misalignment of the railroad tracks. The company believes that the train derailment was not caused by driving speed, train scheduling, or mechanical failure.