Did you kw that 42 percent of U.S. energy comes from coal? Coal is still a widely used power source. A coal miners job is to get raw coal out of the ground. Coal miners w use machines to help them accomplish this task. Discover more fascinating facts in Coal Miner, a Dirty Jobs book. This is an AV2 media enhanced book. A unique book code printed on page 2 unlocks multimedia content. This book comes alive with embedded weblinks, audio and video clips, activities, and other features, such as a slide show, matching word activity, and quiz.