I too worked on the railroad at SFGAm quite a few years back (1990-1992). The train at SFGAm is quite different from a noraml Steam Engine. So, stopping it in a short distance was easy to do. But, with the case of the one at Knotts, since this was a REAL Steam engine, they are hard to stop in a hurry. So, I agree with lumpy72 in the comments that he made. The only thing that probably saved the operator was the speed that the train was traveling. I'm guessing that the train at Knotts does not go much over 15 or 20 MPH?
--Brian
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Brian A. Plencner
E-Mail: saurses@home.com