Caption: Sarnia Derailment: This was the result of a collision between two switching jobs in CN\\\'s yard in Sarnia, ON. No emergency vehicles were ever in evidence except for a single CN police truck, so I do not believe there were any injuries or leaks from any of the derailed tankcars. Sure did a good job of fouling up the west end of the main classification yard though. Fortunately the one through track at left was still available.