NexGen Drills Most Off-Scale to Date in A3 Shear and Expands Arrow with Extensive Zones of Mineralization Across Key Growth Areas
NexGen Drills Most Off-Scale to Date in A3 Shear and Expands Arrow
with Extensive Zones of Mineralization Across Key Growth Areas
Vancouver, BC, October 2, 2017 – NexGen Energy Ltd. (“NexGen” or the “Company”) (TSX:NXE, NYSE:NXE) is
pleased to report radioactivity results for 22 hole s as part of the on-going summer drilling program o n our
100% owned, Rook I property, Athabasca Basin, Saska tchewan. An additional diamond drill rig was broug ht
into operation to assess the recently discovered South Arrow zone, which is located 400 m south of the Arrow
Deposit.
Eight diamond drill rigs are now active at the Arro w Deposit and South Arrow with infill, step-out and
exploration drilling underway. In addition, one sonic drill rig testing subsurface conditions as part of the pre-
feasibility geotechnical study has successfully com pleted its work. Additional geotechnical drilling c ontinues
utilizing a diamond drill rig. Initial geotechnica l drilling discovered an interval of semi-massive pitchblende
mineralization 130 m northwest and up-dip from the A1 mineral resource domain.
A3 High Grade Domain Infill Drilling
• Infill hole AR-17-147c3 intersected 79.5 m of total composite mineralization including 17.35 m of
total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 114.5 m section (542.0 to
656.5 m). This intersection is the most extensive off-scale radioactivity intersected in the A3 shear to
date (see Figure 1).
• Infill hole AR-17-147c4 intersected 67.5 m of total composite mineralization including 5.45 m of total
composite off-scale radioactivity (>10,000 to >61,000 cps) within a 182.0 m section (588.0 to 770.0
m).
• Infill hole AR-17-155c2 intersected 41.0 m of total composite mineralization including 5.15 m of total
composite off-scale radioactivity (>10,000 to >61,000 cps) within a 100.0 m section (486.5 to 586.5
m).
Expansion in the Southwest and Northeast Gaps
In the resource growth areas of the southwest and northeast gaps , broad zones of mineralization including
off-scale radioactivity have been intersected throughout (Figure 2).
• Step-out hole AR-17-129c5 intersected 71.0 m of total composite mineralization including 5.85 m of
total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 295.0 m section (616.5 to
911.5 m) in the A2 through A5 shears in the northeast gap .
• Step-out hole AR-17-156c1 intersected 38.0 m of total composite mineralization including 3.0 m of
total composite off-scale radioactivity (>10,000 to 30,500 cps) within a 87.0 m section (657.0 to 744.0
m) in the A3 and A4 shears in the southwest gap .
• Step-out hole AR-17-146c2 intersected 36.0 m of total composite mineralization including 2.55 m of
total composite off-scale radioactivity (>10,000 to >61,000 cps) within a 121.0 m section (661.5 to
782.5 m) in the A3 and A4 shears in the southwest gap .
Geotechnical Drilling
Geotechnical drilling testing subsurface conditions as part of the pre-feasibility study has intersected uranium
mineralization northwest of the A1 shear indicating the potential for additional shears to the northwest (see
Figure 3).
• Geotechnical hole GAR-17-001 intersected 34.5 m of total composite mineralization including 0.9 m
of continuous off-scale radioactivity (>10,000 to 54,000 cps) within a 265.5 m section (272.0 to 537.5
m).
Arrow Activities & Financial
• The eight diamond drill rig summer development and exploration program consisting of an expanded
35,000 m of drilling continues to be fully operational.
• Multiple advanced technical studies including geote chnical drilling, hydrogeological work,
environmental and metallurgy are underway.
• The Company has cash on hand of approximately $185 million.
Longitudinal sections, a cross section view of GAR-17-001, and drill hole locations are shown in Figures 1 to 4.
Garrett Ainsworth, Vice-President, Exploration and Development, commented: “The summer drill program’s
objectives of increasing indicated mineral resources through infill, and inferred mineral resources through step-
outs continue to be achieved. An important charact eristic of the basement-hosted Arrow Deposit is its high
degree of continuity in grade and thickness, which continues to be observed across the Deposit includi ng in
the A3 High Grade Domain where we expect a high con version of inferred to indicated mineral resources.
Expansion is also clearly evident through step-out drilling in the A4 shear, southwest and northeast g aps as
well as the potential for a new shear to the northwest of the A1.
Leigh Curyer, Chief Executive Officer, commented: “These latest results which include the most extensive off-
scale mineralization seen to date in the A3 shear highlights considerable future drilling is required to determine
the full extent of Arrow. Infill drilling continues to demonstrate the intensity of mineralization often increases
which is significant from a mine optimization plann ing perspective. Further, pre-feasibility study pro grams
incorporating advanced engineering and environmental work is in full flight. Together, with the incre ase in
drilling focus on the exciting South Arrow Discovery, NexGen is at an exciting stage of development.”
Figure 1: A3 Mineralized Long Section
Figure 2: Arrow Deposit Schematic Long Section
Figure 3: Cross Section View of GAR-17-001
Figure 4: Arrow Deposit Drill Hole Locations