Employee was in the process of removing a rock that had hung in 2 C Header. He heard a ""pop"" in his elbow on 8-13-12. He had a MRI on 8-14-12. 8-15-12 he had his follow up on MRI. 8-16-12 MRI revealed torn bicep tendon he was scheduled for surgery on 8-27-12. He started missing work on 8-28-12.