According to the first post on thi thread, the track was not maintained properly, and was wide gauge. "On the morning of the crash, this caused the locomotive's front left wheel to drop inside the track and sent it careering into the bridge supports."
Halifax, NS, was fine the few hours I was there; no need for deliverance from it. I don't know about the one in Yorkhire
On commuter railroads like the one I work for, you have trainmen picking up transportation from all the passengers. They make good money, put in long hours.