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[quote user="PigFarmer1"] So what is an "average derailment"?   I don't think I've ever had the good fortune to work an "average" derailment, but then again, I just do this kind of stuff for a living. "Graceful ballooning'?  Amazing.  When when we're out there repairing a track buckle we always marvel at how graceful it is.  Geez...  Please save the expert commentary for a field you're actually familiar with. <div style="clear:both;"></div> [/quote] All I meant by “average derailment” was to draw a distinction between the appearance of most derailments as they happen, and the appearance of a train moving through a sun kink prior to derailing.   <o:p></o:p> If the train moving though a sun kink were observed ahead of the derailment, you could reasonably assume that the derailment was caused by the sun kink.  But if the only thing that was seen was a derailment on top of a bridge, I think it would be difficult to rule out bridge failure as the first cause from 2000-4000 feet away.      <o:p></o:p>
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