Denison Announces Active Summer Plans for Wheeler River and Pipeline Projects

Denison Mines (“Denison” or the “Company”) (TSX:DML)(NYSE MKT:DNN) is pleased to announce the specifics of its summer plans for its 60% owned Wheeler River project and its other Athabasca Basin pipeline projects.
Wheeler River
A total of 18,000 metres of drilling is planned in approximately 40 holes. The program, which is entirely focused in and around the Gryphon deposit, commenced in late May and is expected to run until the end of September with the following objectives:

• Completion of the Gryphon infill drilling program to bring the current inferred resources to an indicated level of confidence (18 holes);
• Additional infill and expansion drilling to potentially add indicated resources from priority exploration areas surrounding and within the Gryphon deposit (~10 holes); and
• Infill and expansion drilling within the D series lenses to potentially add indicated or inferred resources to the Gryphon deposit (~10 holes).
• The drilling plan includes predominantly daughter holes, drilled from existing surface (or “parent”) holes, in order to test more targets by drilling less metres. Continued use of directional drilling at Gryphon will ensure optimal drilling accuracy in addition to cost savings. The summer program at Wheeler River also includes continuation and completion of certain Pre-Feasibility Study (“PFS”) field activities, including environmental and engineering data collection programs.

An updated mineral resource estimate for Wheeler River is planned once summer assay results are received, and is then expected to be incorporated into the completion of a PFS planned for 2018.
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