An updated report has been submitted following a review by Ontario Securities Commission which said that earlier report does not include all of the current mineral resource estimates and material information relevant to the Mutanga project as a whole.

Denison Mines had submitted a technical report on 18 March 2012 under a title, "The Dibwe East Project, Southern Province, Republic of Zambia".

The new report takes into account the mineral resources covered by the Dibwe East Report together with the mineral resources covered by the Company’s technical report filed on 20 March 20 2009 and replaces the Dibwe East Report and the Mutanga and Dibwe Report.

Located in southern Zambia, in the Siavonga District of the Southern Province, the Mutanga project includes the Mutanga and Dibwe deposits as well as a number of exploration areas.