Large parts of the legendary Eastern coal industry are struggling, perhaps never to recover. Arch Coal, the nation's second largest coal company, filed for Chapter 11 bankruptcy reorganization in January, seeking to restructure some $4.5 billion in debt. Alpha Natural Resources, another large coal producer, also filed for bankruptcy. Peabody Energy, the nation's largest coal company, may be headed toward bankruptcy. U.S. coal production has hit a 30-year low.