EXHIBIT NUMBER DESCRIPTION 21.1 Subsidiaries of the Company. 1 ALLEGHENY & WESTERN ENERGY CORPORATION SUBSIDIARIES 1. Mountaineer Gas Company, a West Virginia corporation, formerly Columbia Gas Company of West Virginia. 2. Petro Services, Inc., a West Virginia corporation. 3. Gas Access Systems, Inc., a West Virginia corporation. 4. TEX-HEX, Corp., a Texas corporation. 5. A&W Exploration New Zealand Limited, a New Zealand Corporation. 6. Mountaineer Gas Services, Inc., a West Virginia corporation, a wholly-owned subsidiary of Mountaineer Gas Company.