On 4-17-2007 Miner was cleaning out under a conveyor tailwheel with a shovel and a rake. Miner was pulling out material wth a rake and felt a ""pull"" in his back. He attempted to give ""pull"" a chance to heal. On 05-02-2007 Miner requested a Dr. appointment. This resulted in a diagnosis of an acute lumbosacral strain requiring physical therapy.