Investor Presentaiton

• • . 1 Nabarlek Prospect: A new opportunity for high-grade Nabarlek-style discovery New targets identified for follow-up drilling at intersection of breccia and graphitic sediments Uranium mineralisation lies in close proximity to graphitic sediment Graphitic sediment provides excellent host rock properties for uranium mineralisation DevEx is now reviewing previous electromagnetic data to refine targets --200mRL Section Window 9490mN (Looking North) --300mRL Pyrite 441m Graphitic Sediments Refining targets for future drilling * DEV ASX Announcement 10-Sept-19 50m 549m 19NBDD0001 Nabarlek F6 Breccia 400 19NBDD0002 Oenpelli Dolerite 400 450 AVA 0.3m @525ppm U₂O, Sulphide (pyrite) Silicified Breccia Target at intersection of Breccia and Graphitic Sediments 500 Cahill Formation 10 200mE 10 300mE 19

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