Exhibit 21

CONSOL Energy Inc.

Subsidiaries of CONSOL Energy Inc.

As of January 31, 2010

(In alphabetical order reflecting correct capitalization)

AMVEST Coal & Rail, LLC. AMVEST Coal Sales, Inc. AMVEST Corporation AMVEST Gas Resources, Inc. AMVEST Mineral Services, Inc. AMVEST Minerals Company, LLC. AMVEST Oil & Gas, Inc. AMVEST West Virginia Coal, LLC. Braxton-Clay Land & Mineral, Inc. Cardinal States Gathering Company Cargo Dockers Ltd. Central Ohio Coal Company CNX Funding Corporation CNX Gas Company, LLC. CNX Gas Corporation CNX Land Resources Inc. CNX Marine Terminals Inc. (formerly Consolidation Coal Sales Company) Coalfield Pipeline Company Conrhein Coal Company CONSOL Energy Canada Ltd. CONSOL Energy Inc. CONSOL Energy Sales Company (formerly CONSOL Sales Company) CONSOL Financial Inc. CONSOL of Canada Inc. CONSOL of Central Pennsylvania, LLC. CONSOL of Kentucky Inc. CONSOL of Ohio, LLC. CONSOL of WV, LLC. CONSOL of Wyoming, LLC. Consol Pennsylvania Coal Company, LLC. (formerly Consol Pennsylvania Coal Company) Consolidation Coal Company Eighty-Four Mining Company Fairmont Supply Company Fola Coal Company, LLC. Glamorgan Coal Company, LLC. Helvetia Coal Company Island Creek Coal Company Keystone Coal Mining Corporation Knox Energy, LLC. Laurel Run Mining Company Leatherwood, Inc. Little Eagle Coal Company, LLC. McElroy Coal Company MOB Corporation Mon River Towing, Inc. Mon-View, LLC. MTB, Inc. Nicholas-Clay Land & Mineral, Inc. North Penn Pipe & Supply, LLC. Peters Creek Mineral Services, Inc. Piping and Equipment, Inc. Reserve Coal Properties Company Rochester & Pittsburgh Coal Company Southern Ohio Coal Company TEAGLE Company, LLC. TECPART Corporation Terra Firma Company Terry Eagle Coal Company, LLC. Terry Eagle Limited Partnership Twin Rivers Towing Company Vaughan Railroad Company Western Allegheny Energy, LLC. Windsor Coal Company Wolfpen Knob Development Company Youngs Creek Mining Company, LLC.