Denison announces discovery of additional high-grade mineralization at gryphon and reports results from successful delineation program

Toronto , july 16, 2025 /prnewswire/ - denison mines corp. ("denison" or the "company") (tsx: dml) (nyse american: dnn) is pleased to announce the discovery of additional high-grade mineralization approximately 40 metres outside of the previously estimated mineralized domain associated with the d1 lens of the gryphon uranium deposit ("gryphon"). drill hole wr-837ad2 intersected 2.3  metres at 1.69 % eu 3 o 8  including 0.5  metres at 5.48 % eu 3 o 8 in the down plunge direction from the previously defined d1 lens.
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