POLSON LOCAL WAS SWITCHING OUT FIVE LOADED LOG CARS FROM THEIR TRAIN. THEY HAD JUST MADE AN EASTWARDMOVEMENT ON TRACK 16,BEHIND YARD OFFICE,TO PICKUP THE FIVE LOADS AND SET THEM TOWARDS STORAGE TWO.AFTER PICKING UP FIVE LOADS THEY STARTED PULLING WESTWARD ON TRACK16, WHEN MRL 61010 GOT TO THE SWITCH THAT GOES INTO THE WHITE PINE LEAD OFF TRACK16,THE WEST END OF THE CAR WENT TOWARDS TRACK16 AND THE EAST END OF THE CAR WENT INTO THE WHITE PINE,SIDESWIPING MRL LOCOMOTIVE 121 AND ALSO DERAIL MRL 61136, LOAD OF LOGS AHEAD OF MRL61010.NoneNoneNoneNoneNoneNoneNoneNoneNone