7/12/2013 EE was driving truck on site, he drove over a bumpy portion of the mine road causing his elbow to strike the arm rest. EE reported injury on 7/15/2013 EE saw phys. on 7/18/2013-CT scan ordered shows bone chip on elbow. Follow-up reading sched. 8/6/2013 to determine if work related or an existing injury. Item being treated as reportable pending verification by phys.