EMPLOYEE EXITED THE LEFT SIDE OF THE CAB AND AS HE WALKED AROUND THE CORNER LOST HIS BALANCE AND HAD TO SIDE STEP (SHUFFLE HIS FEET) TO THE LEFT AND GRAB FOR THE RAILING. THE RAILING DIDN'T SU PPORT HIS WEIGHT AS THE WELD WAS BROKEN. HE HUNG BY ONE ARM FOR A SECOND BUT COULDN'T HANG ON. HE FELL TO THE GROUND ON HIS RIGHT SIDE INJURING HIS RIGHT SHOULDER.