Denison Reports Uranium Concentrations from Initial Core Leach Tests up to Four Times the Amount Assumed in Pre-Feasibility Study for Phoenix ISR Operation

TORONTO, Feb. 19, 2020 /PRNewswire/ – Denison Mines Corp. (“Denison” or the “Company”) (DML: TSX, DNN: NYSE American) is pleased to report that initial data from core leach tests includes elemental uranium (“uranium”) concentrations, after the initial test startup, in the range of 13.5 grams per litre (“g/L”) to 39.8 g/L. This compares favourably to the previous metallurgical test work completed to assess the use of the In-Situ Recovery (“ISR”) mining method at the high-grade Phoenix uranium deposit (“Phoenix”) – which supported a uranium concentration of 10 g/L for the ISR processing plant design used in the Pre-Feasibility Study (“PFS”) completed for the Company’s 90% owned Wheeler River Uranium Project (“Wheeler River” or the “Project”), located in northern Saskatchewan, Canada. View PDF version.