Loretta Lynn's Official Site
Loretta Lynn's site is a great resource for updates, a biography, and plenty of awesome interviews.
EIA Energy Kids Page on Coal
We'll go ahead and say that this page is great for all ages, not just kids. Easy-to-read explanations of how coal is mined, what it's used for, and why it's an environmental concern—brought to you by the U.S. Energy Information Administration, surprisingly enough.