Calfrac Well Services Announces New Trading Symbol

Calfrac Well Services Ltd. (formerly Denison Energy Inc.) commenced trading on the Toronto Stock Exchange under its new symbol "CFW" on March 29th.

As an update to the Denison Energy Inc. prospectus filed on March 10, 2004, Calfrac announces that it plans to increase its fleet of fracturing equipment in 2004. At the end of 2003, Calfrac had 10 operating spreads of fracturing equipment. Calfrac intends to add one spread designed for fracturing natural gas from coal (sometimes referred to as coal bed methane or CBM) in the first quarter of 2004 and plans to add three spreads designed for conventional fracturing during the remainder of the year.

Calfrac expects that one of the conventional spreads will be sent to the Rocky Mountain region of the United States during the second quarter and that the other two conventional spreads will be added to Canadian operations during the third quarter of 2004.

Calfrac provides specialized oilfield services to exploration and production companies designed to increase the production of hydrocarbons from oil and gas wells throughout western Canada and in the Rocky Mountain region of the United States.