Exhibit 21.1
Subsidiaries of the Company
The following is a complete list of the direct and indirect subsidiaries of Arch Coal, Inc., a Delaware corporation, including their respective states of incorporation or organization, as of February 25, 2009:
| Arch Reclamation Services, Inc. (Delaware) | 100 | % | ||
| Arch Western Acquisition Corporation (Delaware) | 100 | % | ||
| Arch Western Resources, LLC (Delaware) | 99 | % | ||
| Arch of Wyoming, LLC (Delaware) | 100 | % | ||
| Arch Western Finance LLC (Delaware) | 100 | % | ||
| Arch Western Bituminous Group LLC (Delaware) | 100 | % | ||
| Canyon Fuel Company, LLC (Delaware) | 65 | %* | ||
| Mountain Coal Company, LLC (Delaware) | 100 | % | ||
| Thunder Basin Coal Company, L.L.C. (Delaware) | 100 | % | ||
| Triton Coal Company, LLC (Delaware) | 100 | % | ||
| Ark Land Company (Delaware) | 100 | % | ||
| Western Energy Resources, Inc. (Delaware) | 100 | % | ||
| Ark Land LT, Inc. (Delaware) | 100 | % | ||
| Ark Land WR, Inc. (Delaware) | 100 | % | ||
| Ark Land KH, Inc. (Delaware) | 100 | % | ||
| Allegheny Land Company (Delaware) | 100 | % | ||
| Apogee Holdco, Inc. (Delaware) | 100 | % | ||
| Arch Coal Sales Company, Inc. (Delaware) | 100 | % | ||
| Arch Energy Resources, LLC (Delaware) | 100 | % | ||
| Arch Coal Terminal, Inc. (Delaware) | 100 | % | ||
| Arch Receivable Company, LLC (Delaware) | 100 | % | ||
| Ashland Terminal, Inc. (Delaware) | 100 | % | ||
| Canyon Fuel Company, LLC (Delaware) | 35 | %* | ||
| Catenary Coal Holdings, Inc. (Delaware) | 100 | % | ||
| Cumberland River Coal Company (Delaware) | 100 | % | ||
| Lone Mountain Processing, Inc. (Delaware) | 100 | % | ||
| Catenary Holdco, Inc. (Delaware) | 100 | % | ||
| Coal-Mac, Inc. (Kentucky) | 100 | % | ||
| Energy Development Co. (Iowa) | 100 | % | ||
| Hobet Holdco, Inc. (Delaware) | 100 | % | ||
| Mingo Logan Coal Company (Delaware) | 100 | % | ||
| Mountain Gem Land, Inc. (West Virginia) | 100 | % | ||
| Mountain Mining, Inc. (Delaware) | 100 | % | ||
| Mountaineer Land Company (Delaware) | 100 | % | ||
| P.C. Holding, Inc. (Delaware) | 100 | % | ||
| Prairie Holdings, Inc. (Delaware) | 100 | % | ||
| Prairie Coal Company, LLC (Delaware) | 100 | % | ||
| Saddleback Hills Coal Company (Delaware) | 100 | % |
| * | Canyon Fuel is listed in two places |