NexGen Energy Ltd. announced it has completed 8 diamond drill holes using two drill rigs at the Rook 1 project, totaling 1,957m of the planned 3,000m drill program. The drilling covers an area approximately 700m along interpreted extensions of the Patterson Lake South (PLS) 3B conductor and a parallel conductor approximately 800m to the east. Highlights: All holes intersected varying types of structural zones in basement lithologies, ranging from small fractures through to wide heavily brecciated material; maximum downhole width was 38.3m in hole RK-13-03; Holes RK-13-02, -03, -04, -05, -06, and -07 intersected graphitic basement; All holes intersected varying widths of haematisation, chloritisation, argillisation, and calc-silicate alteration in the basement lithologies, generally associated with structural zones; Several holes intersected zones of elevated radiometric readings using a hand scintillometer, the most notable reading being to a maximum of 1,000 counts per second (cps) over 0.5m in hole -06 from 152.6m downhole depth; Shallow basement rock was encountered in the 8 holes, ranging from 48.7m to 82.6m downhole; The current 3,000m drill program will continue into early October subject to weather conditions.

Planning is already underway for a winter campaign testing the immediate area within this zone of drilling.