Miner was at home on Sun. 6/28/13 felt a numbness in leg & lower back went to Dr. the next week to find he has a ruptured disc. He called in sick & turned in for his 2 weeks vacation. He called safety director on 7/10 to report he thought he injured his back at work & was not sure exactly when injury occurred but he thought it could have been 6/26/13 when he was moving a gear box.