EcoWatch: Route 3 cuts through the heart of southern West Virginia coal country, but from the road, you might not even know it. Much of the surface mining is above your head, along the ridges of the Appalachian mountains that flank the road. Youre not likely to spot the entrance to an underground mine, either, though theres one sure way to tell a mine is nearby: the towering metal structures of coal preparation plants punctuate the landscape. Stilted conveyer belts pass over the road, carrying coal from...