NexGen Concludes Highly Successful Summer Development & Exploration Drilling
NexGen Concludes Highly Successful Summer Development &
Exploration Drilling
Vancouver, BC, November 30, 2017 – NexGen Energy Ltd. (“ NexGen” or the “ Company”) (TSX:NXE, NYSE
MKT:NXE) is pleased to report radioactivity results for the final forty holes from South Arrow and Arrow as part
of our now concluded summer drilling program on our 100% owned, Rook I property, in the Athabasca Basin,
Saskatchewan.
Arrow Highlights:
Drilling at Arrow has intersected strong mineralization in multiple areas including step-out holes drilled in key
mineral resource expansion areas in the southwest gap, northeast gap and within the A3 shear. The Arrow
Deposit remains open in most directions.
A3 Step-Outs
AR-17-159c1 intersected 44.0 m of total composite mineralization including 13.85 m of total
composite off-scale radioactivity (>10,000 to >61,000 cps) within a 90.0 m section (377.0 to 467.0 m)
in the A3 shear.
AR-17-159c2 intersected 54.5 m of total composite mineralization including 11.8 m of total
composite off-scale radioactivity (>10,000 to >61,000 cps) within a 101.0 m section (375.5 to 476.5
m) in the A3 shear.
A3 Infill
AR-17-164c1 intersected 47.5 m of total composite mineralization including 5.0 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within a 147.0 m section (497.5 to 644.5 m) in the A3
shear.
Northeast Gap Step-Out
AR-17-171c3 intersected 45.5 m of total composite mineralization including 1.45 m of total
composite off-scale radioactivity (>10,000 to 23,000 cps) within a 183.0 m section (749.5 to 932.5 m)
in the A1 and A2 shears. The hole is 250 m northeast and down-dip of the mineral resource domains.
Southwest Gap Step-Out
AR-17-161c2 intersected 30.0 m of total composite mineralization including 1.2 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within a 314.0 m section (626.5 to 940.5 m) in the A3
though A5 shears. The hole is 54 m southwest and down-dip of the mineral resource domains.
Drill hole locations and longsections are shown in Figures 1 to 4. Drill hole descriptions can be found on our
website at www.nexgenenergy.ca
South Arrow Highlights:
Systematic drilling at the recently discovered South Arrow has intersected uranium mineralization at continued
shallow depths . South Arrow is comprised of multiple, stacked mineralized horizons and high grade
mineralization occurs as accumulations of semi-massive to massive pitchblende similar to the Arrow Deposit.
South Arrow remains largely open and off-scale radioactivity has been intersected over a strike length of
currently 290 m.
AR-17-178c1 intersected 7.5 m of total composite mineralization including 1.85 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within a 170.5 m section (149.0 to 319.5 m). The off-
scale mineralized section begins just 142 m below surface.
AR-17-170c1 intersected 12.0 m of total composite mineralization including 0.5 m of total composite
off-scale radioactivity (>10,000 to >26,000 cps) within a 15.0 m section (243.0 to 258.0 m).
AR-17-174c1 intersected 35.0 m of total composite mineralization including 0.15 m of total
composite off-scale radioactivity (>10,000 to >26,600 cps) within a 161.5 m section (225.5 to 387.0
m).
AR-17-184c1 intersected 11.0 m of total composite mineralization including 0.5 m of total composite
off-scale radioactivity (>10,000 to >21,000 cps) within an 11.0 m section (134.0 to 145.0 m).
Development, Activities & Financial:
The eight drill rig summer development and exploration program has concluded. The program
consisted of 82 infill, expansion, exploration and geotechnical holes totaling 44,781 m of diamond
drilling. Assays remain pending for all holes . An additional five shallow geotechnical holes were
completed with a sonic drill rig to test surface and subsurface conditions for future site infrastructure.
Planning for the winter 2018 development and exploration program has begun in advance of the
maiden Pre-Feasibility Study to be published Q3/2018.
The Company has cash on hand of approximately $170 million.
Garrett Ainsworth, Vice -President, Exploration and Development, commented: “The summer 2017 drill
program objectives have been successfully achieved in balancing indicated resource growth in the A3 High
Grade Domain while expanding inferred resource growth at Arrow . The added bonus of discovery and
expansion of South Arrow suggests significant potential for resource growth with in close proximity to the
Arrow Deposit. A recently completed ground 3D resistivity survey over South Arrow focusing to the south west
has highlighted the significant prospectivity of the Patterson Corridor along strike from Arrow and South Arrow
which is yet to be tested.”
Leigh Curyer, Chief Executive Officer, commented: “The 2017 program has continued to demonstrate Arrow’s
resource growth and incredible robustness with drilling inside and outside the 2016 grade shells. The results
have provided valuable data with respect to future resource growth opportunities and potential mine
development. With assay results pending, plans are well underway for an exciting 2018 targeting continued
resource definition and expansion at Arrow and South Arrow, together with advanced development studies
leading into the publication of a maiden Pre-Feasibility Study in Q3 2018.”
Figure 1: South Arrow Mineralized Longsection
Figure 2: A3 Shear Mineralized Long Section
Figure 3: Arrow Deposit Schematic Long Section
Figure 4: Arrow and South Arrow Drill Hole Locations
Table 1: Arrow Deposit Drill Hole Data
Drill Hole Athabasca
Group -
Basement
Unconformity
Depth (m)
Handheld Scintillometer Results (RS-120)
Hole ID Azimuth Dip
Total
Depth
(m)
From (m) To (m) Width (m) CPS Range
AR-17-146c4 327 -70 978.5 110.4 678.00 678.50 0.50 <500 - 630
715.50 720.00 4.50 <500 - 6270
729.50 730.00 0.50 <500 - 575
736.50 741.00 4.50 <500 - 1800
759.00 760.00 1.00 <500 - 1300
778.00 778.50 0.50 <500 - 3800
793.00 796.00 3.00 <500 - 1450
822.00 824.00 2.00 <500 - 2300
831.00 834.50 3.50 <500 - 2610
837.00 838.00 1.00 <500 - 1250
908.00 908.50 0.50 <500 - 1600
914.50 915.00 0.50 <500 - 530
AR-17-154c3 327 -70 870.5 120.6 597.50 598.00 0.50 <500 - 600
652.00 653.50 1.50 <500 - 2850
701.50 704.50 3.00 <500 - 750
AR-17-154c4 327 -70 945.5 120.6 594.00 594.50 0.50 <500 - 1150
678.50 680.50 2.00 <500 - 5600
714.50 715.00 0.50 <500 - 800
717.50 721.50 4.00 <500 - 6800
724.50 725.00 0.50 800 - 1800
729.50 739.50 10.00 <500 - 5500
745.00 752.00 7.00 <500 - 2600
799.50 800.00 0.50 <500 - 1700
841.00 841.50 0.50 <500 - 620
865.00 869.00 4.00 <500 - 3100
889.50 890.00 0.50 <500 - 820
AR-17-155c3 327 -70 912.5 128.6 437.50 438.00 0.50 <500 - 970
466.50 468.00 1.50 <500 - 4050
471.00 472.00 1.00 <500 - 620
475.50 480.00 4.50 <500 - 8900
494.00 495.00 1.00 <500 - 7800
500.00 501.00 1.00 <500 - 3600
523.00 524.50 1.50 <500 - 2100
534.00 535.00 1.00 <500 - 4600
547.00 550.00 3.00 <500 - 10500
563.00 565.00 2.00 <500 - 8500