EMPLOYEE WAS WORKING AT 517 SHOVEL AND IN ROUTE TO THE VEHICLE CARRYING TWO ROLLS OF WIRE WHEN SUDDENLY THE HIGH WALL NEARBY BEGAN TO FAIL. EMPLOYEE STARTED TO RUN AWAY FROM THE IMMEDIATE DANGER AREA AND DID NOT NOTICE THE TRUCK WAS BEHIND THEM. WHEN EXITING THE AREA THEY RAMMED THEIR SHOULDER INTO THE VEHICLE. EMPLOYEE WAS ON REGULAR DUTY UNTIL SURGERY ON 09/27/2018