EE WAS PUSHING SNOW OFF THE ROADWAY WITH THE BUCKET OF THE CAT 980 F LOADER. HE CAME TO THE RAILROAD TRACKS AND LIFTED THE BUCKET TO CLEAR THE RAILS. THE CUTTING EDGE OF THE BUCKET CLEARED THE RAIL BUT THE SKID PLATE UNDER THE BUCKET CAUGHT THE INSIDE RAIL CAUSING EE TO STRIKE THE LEFT SIDE CAB WINDOW WITH HIS HEAD AND SHOULDER BREAKING OUT THE WINDOW. INJURY RESULTED IN THREE SUTU