A pair of GEs brings up the tail end of a westbound ballast train, currently in the siding at Rocky. These ballast cars, incidentally, are pretty amazing. They each have onboard computers and satellite link-ups. Each car knows where it is on the rails and how fast the train is moving (when it is moving). This allows the ballast cars to automatically dump ballast at the exact correct rate. As a result of being GPS enabled, the cars stop dumping ballast when crossing grade crossing and over switches.
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