denison is a uranium exploration and development company with interests focused in the athabasca basin region of northern saskatchewan – including its 60% owned wheeler river project, which hosts the high grade phoenix and gryphon uranium deposits. denison also owns a 22.5% interest in the mcclean lake uranium mill, which is currently processing ore from the cigar lake mine under a toll milling agreement, and is the manager of uranium participation corp., a publicly traded company which invests in uranium oxide and uranium hexafluoride. denison is a member of the lundin group of companies and is listed on the tsx exchange under the symbol dml and on the nyse mkt under the symbol dnn.