Denison Mines Corp. reported the receipt of assay results from the 2014 winter drilling at the Gryphon zone on the Wheeler River property in Saskatchewan. The Gryphon zone of high grade, basement hosted uranium mineralization was discovered at Wheeler River this winter with drill hole WR-556 intersecting 4.0 metres grading 15.3% U(3) O(8). Only one follow-up hole (WR-560) was drilled, and it also intersected high grade uranium returning 21.2% U(3) O(8) over 4.5 metres. WR-560 was drilled 40 metres up-dip of WR-556 on the same section. Mineralization at the Gryphon zone is approximately 200 metres beneath the sub-Athabasca unconformity and is open in both strike directions and at depth. As WR-560 is a steeply plunging drill hole and the mineralization is interpreted to dip moderately, the true thickness is expected to be approximately 75% of the intersection length.

The company expects to complete 21,000 metres of drilling on four properties (three of which will be operated by Denison) during the summer season in the eastern Athabasca Basin. The season is expected to begin in mid-June with drilling on the Wheeler River property. The Denison operated programs are Wheeler River, Crawford Lake (100% Denison) and Bachman Lake (80% Denison, 20% International Enexco). Exploration drilling will also be completed at McClean Lake (22.5% Denison, 70% Areva, 7.5% OURD). McClean Lake is operated by Areva Resources Canada Inc. In addition to the drilling, geophysical surveying will be carried out on five properties. At Wheeler River, 14,000 metres of drilling is planned in eighteen drill holes, all of which will be in the general area of the Gryphon zone. Most of the drilling will consist of 50 metre step outs along strike and down dip of the new discovery. Some of the holes will also complete drill fences 800 metres along strike to the northeast and southwest of Gryphon. Drilling at Crawford Lake and Bachman Lake will follow up on alteration zones intersected in 2013 and will also target anomalies generated by winter 2014 geophysical surveys. McClean Lake drilling will target geophysical anomalies near the McClean South uranium deposit.