I spent some formidable years living in a train depot, main line was my front yard. Grew up to work as a Hog Head (Engr) for one RR and as Conductor for another. Resigned after 10 yrs. On call 24/7 going east or west on the north and south rail, lots of pay & benefits, but not for my life. Look forward to my pension though!
The movie: I do not know the story of the real event, but hollywood knows how to tell a story and entertain. Yeah, the longer and heavier, the more distance you need to stop. They were making some great improvements in dymanic braking and train control before I left.
The hostler plugged the deadman feature (which was a common practice back then), but ya never leave the cabin of a loco with it in place. See movie for reason why!
Been some time since I saw the movie, but if they really got behind the train I wonder why they just didn't open the angle cock at the rear. You dump the air and the brakes on every car set up. Or a shotgun blast to the air hose between the last two cars would do the same thing. Easy for me to say lots of what could have been done, but I don't know the whole story.
The Hog Head (Engr) made a lot of good true statements about what could or would happen, but hollywood changed some of it.
But the scene of the train rounding the curve on elevated rail was a bit much. Locomotives and loaded tankers are heavy.
Enough momentum to lift wheels off a track like that would surely end in a pile up.
But it added to the suspense. Whatever, glad it ended the way it did.