Mr. Chair, it would be difficult to say that, because it's not what the train is carrying that causes the derailment. It's the track; it's the wheels; it's other factors. Therefore, what we say is if you're going to carry oil or any other dangerous good by rail, you need to take all the steps in terms of containment and other risk mitigation measures to reduce the risk of a derailment, and then mitigate with the tank cars to mitigate the consequences of a derailment.
