It was a normal day in Sharon Springs, Kansas when a Union Pacific crew boarded a loaded coal train for the long trek back to Salina.

Just a few kilometres into the trip, a wheel bearing became overheated and melted off letting the truck support drop down and grind on top of the rail creating white hot molten metal droppings that spewed down onto the rails.

The GOOD NEWS to this is that a very alert crew noticed a small amount of smoke halfway back in the train and immediately stopped the train in compliance with the rules.

The BAD NEWS to this is that the train just happened to stop with its hot wheels on top of a wooden trestle bridge built with creosoted ties, bents and trusses.