Employee was using a frontend loader to clean up an area on level 8, when he parked his loader to get out and look the area over he stepped on a rock on turned his ankle. Agrivating an old injury. He did not miss time until 10/20/2004. On the 20th he called and said he would not be able to work due to his injury. He has an appointment 10/29/2004 with a doctor.