NexGen Returns 13.5 m at 3.94% U 3O8 including 2.5 m at 20.90% at Harpoon
NexGen Returns 13.5 m at 3.94% U 3O8 including 2.5 m at 20.90% at
Harpoon
Vancouver, BC, March 23, 2017 – NexGen Energy Ltd. (“ NexGen ” or the “ Company ”) ( TSX:NXE, OTCQX:NXGEF )
is pleased to report assay results for 20 holes fro m our 2016 drilling program on our 100% owned, Rook I
property, Athabasca Basin, Saskatchewan.
Complete assay results have been received from all holes drilled at the Harpoon discovery and other regional
target areas on the Rook I property from the 2016 drill program. At Harpoon, multiple holes have intersected
uranium mineralization as well as encouraging alteration and narrow intervals of uranium mineralization was
identified up to 2.3 km south of the Arrow Deposit . The mineralized footprint at Harpoon has been tra ced
over a strike length of at least 340 m on the Rook I property , and remains open in all directions .
Highlights:
Harpoon Discovery
• HP-16-20 (73 m up-dip and northeast from discovery hole HP-16-08) intersected 13.5 m at 3.94% U 3O8
(182.5 to 196.0 m) including 2.5 m at 20.90% U 3O8 (187.0 to 189.5 m).
• HP-16-08 (Discovery Hole) intersected 17.5 m at 3.89% U 3O8 (219.5 to 237.0 m) including 2.5 m at
12.49% U 3O8 (224.5 to 227.0 m).
• HP-16-13 (33 m down-dip and southwest from HP-16-08) intersected 18.5 m at 1.17% U 3O8 (211.5 to
230.0 m).
Furthermore, uranium mineralization has been confirmed for the first time 2.3 km south of the Arrow Deposit
(see Figure 3). Regional holes RK-16-98, -100, -102, -104, -106 and -108 were drilled at a target area featuring
a disrupted VTEM conductor and gravity low situated along a steep magnetic gradient, which presents a similar
geophysical signature to that of the Arrow Deposit. All holes intersected widespread and intense
hydrothermal alteration including near complete clay and silica replacemen t styles over tens of meters (see
news release dated November 2, 2016). Holes RK-16-98 and -108 also intersected narrow zones of low grade
uranium mineralization (see Table 1).
Arrow, Activities & Financial
• The 2017 winter program comprising a minimum of 35, 000 m using seven drill rigs is currently
underway.
• The Company has cash on hand of approximately $64 million.
A Harpoon long section as well as plan maps with ho le locations are shown in Figures 1 to 3. Table 1 shows
complete assay results.
Garrett Ainsworth, Vice-President, Exploration and Development, commented: “With only 24 drill holes,
Harpoon has the potential to be a new uranium zone and speaks to how fertile the Patterson Corridor is for
high-grade uranium. The ZTEM survey over the Patterson Corridor is a dynamic layer of geophysical data which
complements our existing data, and will be used to further refine regional targets along the Patterson Corridor
in the future.”
Leigh Curyer, Chief Executive Officer, commented: “ The Harpoon assays and the early results 2.3km to t he
southwest of Arrow highlight the vast prospectivity of the entire Patterson Corridor of which NexGen o wns
9km of strike on the Rook I property. With the recent updated mineral resource estimate validating Arrow as
a strategic mineral asset, but in the early stage of ultimate definition, it demands 100% of the focus and metres
given its obvious growth potential. Without taking anything away from these terrific results at Harpoo n and
the clear potential for additional discoveries along the Patterson Corridor, the winter 2017 campaign is focused
within a 1 km radius of Arrow where the growth is e videnced by the recent results of broad and sub int erval
high-grade intercepts in the A2 and A3 shears to the northeast and also to the southwest towards the 180 m
zone.”
Figure 1: A2 Harpoon Long Section
Figure 2: Harpoon Discovery Drill Hole Locations
Figure 3: ZTEM Survey Results and Regional Drill Hole Locations
Table 2: Assay Results
Drill Hole Athabasca Group -
Basement
Unconformity Depth
(m)
SRC Geoanalytical Results
Hole ID Azimuth Dip
Total
Depth
(m)
From (m) To (m) Interval
(m) U3O8 (wt%)
HP-16-05 320 -70 558.00 125.10 288.50 293.50 5.00 0.03
HP-16-06 320 -70 540.00 126.70 290.00 290.50 0.50 0.01
302.50 304.50 2.00 0.07
309.00 311.00 2.00 0.02
HP-16-07 320 -70 578.00 128.90 364.00 364.50 0.50 0.01
370.00 371.00 1.00 0.02
HP-16-08 305 -70 393.00 N/A 219.50 237.00 17.50 3.89
incl. 224.50 227.00 2.50 12.49
HP-16-10 305 -70 351.00 136.00 230.00 232.00 2.00 0.01
238.00 248.00 10.00 0.10
253.00 255.00 2.00 0.01
HP-16-11 305 -70 330.00 135.00 223.50 224.00 0.50 0.02
247.50 258.00 10.50 0.08
HP-16-12 305 -70 398.00 129.00 218.50 235.00 16.50 0.04
238.00 244.50 6.50 0.03
HP-16-13 0 -90 369.00 N/A 211.50 230.00 18.50 1.17
HP-16-14 0 -90 276.00 129.20 205.00 216.50 11.50 0.12
HP-16-15 0 -90 288.00 N/A 195.50 196.00 0.50 0.09
211.00 211.50 0.50 0.03
260.50 261.00 0.50 0.02
HP-16-16 0 -90 297.00 133.60 195.00 198.00 3.00 2.72
HP-16-17 0 -90 364.00 133.50 168.50 169.50 1.00 0.02
199.50 203.00 3.50 0.01
207.50 219.50 12.00 0.12
HP-16-18 0 -90 342.00 133.80 187.00 216.00 29.00 0.23
incl. 193.00 197.50 4.50 1.22
HP-16-19 0 -90 294.00 134.50 180.00 187.50 7.50 1.16
192.00 194.50 2.50 0.19
207.00 207.50 0.50 0.03
HP-16-20 0 -90 330.00 N/A 182.50 196.00 13.50 3.94
incl. 187.00 189.50 2.50 20.90
200.50 203.00 2.50 0.01
205.50 209.50 4.00 0.04
HP-16-21 0 -90 275.00 137.10 172.00 177.50 5.50 0.83
180.50 182.00 1.50 0.02
185.00 186.00 1.00 0.02
HP-16-22 0 -90 324.00 N/A 191.50 214.00 22.50 0.34
incl. 200.50 205.00 5.00 1.47
HP-16-24 0 -90 303.00 N/A 214.50 219.50 5.00 0.43
222.50 223.50 1.00 0.02
227.00 227.50 0.50 0.03
RK-16-98 320 -75 534.00 56.00 440.00 440.50 0.50 0.01*
RK-16-108 130 -60 522.00 N/A 356.00 357.00 1.00 0.04
Composite parameters:
• Minimum thickness 0.5 m downhole
• Cutoff grade 0.01% U 3O8
• Maximum internal dilution 2.00 m downhole
• U3O8 analyzed by ICP-OES at SRC Geoanalytical Laboratories, Saskatoon, Saskatchewan
• Harpoon drill hole (HP-16-XX) true widths are estimated to be approximately 55-90% of core lengths.
• *Uranium analyzed by ICP-MS at SRC Laboratories and converted from parts per million to percent
Split core samples were taken systematically, and intervals were submitted to SRC Geoanalytical Laboratories
(an SCC ISO/IEC 17025: 2005 Accredited Facility) of Saskatoon for analysis. All samples were analyzed using ICP-
MS for trace elements on partial and total digestio ns, ICP-OES for major and minor elements on a total
digestion, and fusion solution of boron by ICP-OES. Mineralized samples were analyzed for U3O8 by ICP- OES
and selected samples for gold by fire assay.
All assay batches reported herein are subjected to and have passed rigorous internal QA/QC protocols t hat
include, but are not limited to, the blind inserti on of standard reference materials, blank materials and field
duplicates into the sample stream at both random an d systematic intervals. Please see the Rook I Techn ical
Report (as defined below) for detail of our QA/QC protocols.
Technical Information
All scientific and technical information in this ne ws release has been prepared by or reviewed and app roved
by Mr. Garrett Ainsworth, P.Geo., Vice President – Exploration & Development for NexGen. Mr. Ainsworth is a
qualified person for the purposes of National Instrument 43-101 Standards of Disclosure for Mineral Projects
(“NI 43-101”), and has verified the sampling, analytical, and test data underlying the information or opinions
contained herein by reviewing original data certificates and monitoring all of the data collection protocols.
For details of the Rook I Project including the quality assurance program and quality control measures applied
and key assumptions, parameters and methods used to estimate the mineral resource set forth above please
refer to the technical report entitled “Technical Report on the Rook 1 Property, Saskatchewan, Canada” dated
effective April 13, 2016 (the “Rook 1 Technical Rep ort”) prepared by Mark B. Mathisen and David Ross, each
of whom is a “qualified person” under NI 43-101. The Rook I Technical Report is available for review under the
Company’s profile on SEDAR at www.sedar.com.
An updated technical report will be available within 45 days from the March 6, 2017 news release referred to
below announcing the updated Mineral Resource estime for the Arrow Deposit.
About NexGen
NexGen is a British Columbia corporation with a foc us on the acquisition, exploration and development of
Canadian uranium projects. NexGen has a highly expe rienced team of uranium industry professionals with a
successful track record in the discovery of uranium deposits and in developing projects through discov ery to
production. NexGen’s goal is to become the world’s leading supplier of mined uranium.
NexGen owns a portfolio of highly prospective uranium assets in the Athabasca Basin, Saskatchewan, Canada,
including a 100% interest in Rook I, location of th e Arrow Deposit, in February 2014 and Bow Discovery in
March 2015 and the Harpoon Discovery in August 2016 . The Arrow Deposit’s March 2017 updated Mineral
Resource estimate (effective December 20, 2016) comprises an Indicated Mineral Resource of 179.5 M lbs of
U3O8 contained within 1.18 M tonnes grading 6.88% U 3O8, and an Inferred Mineral Resource of 122.1 M lbs
of U 3O8 contained within 4.25 M tonnes grading 1.30% U 3O8. Please see the Company’s news release dated
March 6, 2017 for the key assumptions, parameters and methods used to estimate the mineral resources.
Leigh Curyer
Chief Executive Officer
NexGen Energy Ltd.
+1 604 428 4112
www.nexgenenergy.ca
Travis McPherson
Corporate Development Manager
NexGen Energy Ltd.
+1 604 428 4112
http://www.nexgenenergy.ca
This news release contains "forward-looking information" within the meaning of applicable Canadian securities
legislation. “Forward-looking information” include s, but is not limited to, statements with respect t o the
activities, events or developments that the Company expects or anticipates will or may occur in the fu ture,
including, without limitation, planned exploration activities. Generally, but not always, forward-look ing
information and statements can be identified by the use of words such as “plans”, “expects”, “is expec ted”,
“budget”, “scheduled”, “estimates”, “forecasts”, “i ntends”, “anticipates”, or “believes” or the negati ve
connotation thereof or variations of such words and phrases or state that certain actions, events or r esults
“may”, “could”, “would”, “might” or “will be taken”, “occur” or “be achieved” or the negative connation thereof.
Such forward-looking information and statements are based on numerous assumptions, including among
others, that the results of planned exploration activities are as anticipated, the price of uranium, the anticipated
cost of planned exploration activities, that genera l business and economic conditions will not change in a
material adverse manner, that financing will be ava ilable if and when needed and on reasonable terms, and
that third party contractors, equipment and supplie s and governmental and other approvals required to
conduct the Company’s planned exploration activitie s will be available on reasonable terms and in a ti mely