Harpoon Discovery, Rook I

The Rook I property hosts the Harpoon Discovery located 4.7 km northeast of the Arrow Deposit which in discovery hole HP-16-08 intersected 17.5 m at 3.89% U₃O₈ (219.5 to 237.0 m) including 2.5 m at 12.49% U₃O₈ (224.5 to 227.0 m). Furthermore, hole HP-16-20, which was drilled 73 m up-dip and northeast from hole HP-16-08, intersected 13.5 m at 3.94% U₃O₈ (182.5 to 196.0 m) including 2.5 m at 20.90% U₃O₈ (187.0 to 189.5 m).

Aerial graphic image identifying South Arrow, Arrow, Bow and Harpoon, along the Patterson Corridor

This new discovery is land-based and is defined by strong visible uranium and dense accumulations of massive to semi-massive pitchblende mineralization (see Core Photo below). Within the Rook I property, uranium occurrences along trend have now been identified over a mineralized strike length of approximately 6 km. The known mineralized strike length from Spitfire to PLS is approximately 14 km, of which approximately 9 km lies within NexGen mineral dispositions.

Aerial map identifying location of Harpoon discovery close to the Rook I property boundary with more than 21 drill hole collar locations

Aerial map of Rook I property showcasing a 4.7 km stretch between the Arrow Deposit and the Harpoon Deposit

The Harpoon Discovery is located on a Rook I internal mineral disposition (northeast of green dashed line in Figure 1) which is subject to a 2% net smelter return royalty (the “NSR”) of which 1% can be repurchased by the Company for $1 million which is held by Advanced Royalty Corp. In addition, Harpoon is subject to a 10% production carried interest held by Terra Ventures Inc. which provides Terra Ventures with a right to 10% of potential future production provided Terra Ventures pays NexGen their 10% pro rata portion of the collective expenditure from June 20, 2005.

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