In energy rich parts of the country, over one million acres of land is currently dug up and built on for coal mining operations. Reclaiming those mines—filling the pits with dirt and then recreating the ecosystem that once was, is expensive. Montana requires mining companies to put up money up front to pay for eventual clean up. But not all states, do, and as the dramatic decline of the coal industry advances, coal companies may no longer have billions in cash on hand to pay their clean-up costs. Inside Energy reporter Leigh Paterson looks at the massive task of reclaiming the land from our energy appetites.