@Steaming Jon posted:It’s technically not a “double train”. The engines in the middle are helpers, called “distributed power”. The whole train is likely headed to a power plant. I would assume (don’t know for sure though) that the helpers would be switched out of the train before it is run through the rotary dumpers…
Well, if the tonnage for the entire train is more than a set of units on the head end can handle, then, it is a "Double" train!