On 8/16/06, the injured miner was shoveling mud and rock beside the jaw crusher when the shovel struck a rock covered by mud. The impact of the shovel on the rock twisted his right wrist. The injured miner notified his supervisor on 8/23/06, notified the company safety director on 8/25/06, and submitted his inury report form to the company safety director on 8/28/06.