EE was loosening bolts using a 15/16 socket and breaker bar. Employee pulled in his shoulder trying to break loose some bolts. Date of Accident: 2/19/11 Employee went to the doctor on 2/21/11 and he did not indicate that was a work related injury Employee's supervisor notified on 2/22/11 Employee went to our worker's comp clinic on 2/23/11 for evaluation.