483 was on the point of a doubleheaded freight East of Durango at milepost 445.5 when it came to a soft spot in the roadbed and rolled over and jack-knifed on it's left side into a ravine. The second engine was 494. The date was 9/27/58. Andy Payne says the location was also known as Wilson's Gulch.
I'm sorry to say I can't recall the name of 483's fireman who was killed in the accident, but his loss was felt by the entire community.
Some time before this, as I recall, 485 had got loose and creeped headlong into the turntable pit at Salida. 483 and 485 were both seriously damaged in their respective accidents and one locomotive survived between the two of them.
The "engine" part of a locomotive is the cylinder/frame assembly, and 483's "engine" was probably used in the rebuild, as that was where 485 suffered the most damage. So, the rebuilt engine was numbered 483, even though the boiler, cab, and tender were undoubtably from 485. I'm sure I read somewhere that 483's steam dome was cracked in the accident, which in those days was fatal, as there was no interest in ordering a new boiler.
Anyway, that's what happened to the 10th and only missing engine of the K-36 Class.
Mike