NexGen Energy Ltd. announced that the winter 2018 drill program has begun at the 100% owned, Rook I property, in the Athabasca Basin, Saskatchewan. The winter 2018 program will consist of approximately 25,000 m using eight drill rigs and focus on a number of key objectives. At the Arrow Deposit, drilling will focus on further A3 high grade zone definition, targeting the large untested areas surrounding the A1 – A5 shears, potential extensions of the shears particularly to the north east, and definition of newly discovered high grade mineralization northwest of the A1 shear. At South Arrow, drilling will continue to focus on defining the extent of uranium mineralization in all directions. Further, highly ranked geophysical targets on the Arrow, South Arrow and Mirror conductors will be targeted due to the results of geophysical surveys conducted predominantly in 2016 and 2017. Pre-feasibility staged technical studies including geotechnical work, hydrogeological work, and metallurgy continue in advance of the maiden Pre-Feasibility Study scheduled for the third quarter of 2018.