EE originally injured his back on 6/22/07 & 7000-1 filed. On 11/5/08 EE was installing conveyor & hurt his back while turning as he moved conveyor. At the time he thought he had just pulled a muscle or something & didn't report it. On 12/3/08 he reported to our safety director that his back was bothering him & his Dr was taking him off work. EE thinks it is related to '07.