Denison Announces Stantec & ENGCOMP to Lead Pre-Feasibility Study for Wheeler River Project and Provides Update on Status of Gryphon Resource Estimate

TORONTO, ONTARIO--(Marketwired - Jan. 4, 2018) - Denison Mines Corp. ("Denison" or the "Company") (TSX:DML)(NYSE MKT:DNN)(NYSE American:DNN) is pleased to announce that it has retained Stantec Consulting Inc. ("Stantec") and ENGCOMP Engineering and Computing Professionals Inc. ("ENGCOMP") to lead and author the Pre-Feasibility Study ("PFS") for the Wheeler River project, which is the largest undeveloped high-grade uranium project in the infrastructure rich eastern portion of the Athabasca Basin region in northern Saskatchewan.