EXHIBIT 21


                         SUBSIDIARIES OF THE REGISTRANT

SUBSIDIARY                                STATE OF INCORPORATION
- --------------------------------------    --------------------------------------

The Canton Oil & Gas Company              Ohio

Ward Lake Drilling, Inc.                  Michigan

As of December 31, 2003 the other subsidiaries included in the registrant's
consolidated financial statements, and all other subsidiaries considered in the
aggregate as a single subsidiary, did not constitute a significant subsidiary.