NexGen Intersects High-Grade Mineralization in all Twenty A2 and A3 Targets from the 2019 Feasibility Stage Drilling Program
NexGen Intersects High-Grade Mineralization in all Twenty A2 and A3
Targets from the 2019 Feasibility Stage Drilling Program
Vancouver, BC, May 28, 2019 – NexGen Energy Ltd. (“NexGen” or the “Company”) (TSX: NXE, NYSE MKT: NXE)
is pleased to report radioactivity for an additional twenty holes comprising 7,969.5 m from the Company’s
Feasibility stage drilling program at our 100% owned, Rook I property in the Athabasca Basin Saskatchewan.
Objective I: Conversion of Indicated Mineral Resources to Measured Category
This current phase of the 2019 drilling program is targeting the A2 and A3 High -Grade Domain mine planning
sections at a spacing between 9.0 m and 16.7 m. The target spacing incorporates the results of a geostatistical
data spacing report compiled by Clayton V. Deutsch from Resource Modeling Solutions based on 189 drill holes,
totaling 121,923.15 m, which forms the basis of the Indicated Mineral Resource of 256.6 M lbs at 4.04 % U3O8.
All drill holes are collared at a steep inclination, then shallowed out between -55° and -60° before intersecting
the target by utilizing the latest in directional drilling technology.
Highlights:
A2 High-Grade Domains and Sub-zone
• AR-19-229c2 intersected 46.5 m of total composite mineralization including 12.05 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within an 86.0 m section (602.0 to 688.0 m);
• AR-19-229c4 intersected 39.0 m of total composite mineralization including 8.55 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within an 88.0 m section (578.0 to 666.0 m);
• AR-19-230c3 intersected 30.5 m of total composite mineralization including 7.55 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within a 93.0 m section (564.0 to 657.0 m). Additionally,
of the 7.55 m of off -scale mineralization intersected in the hole , 0.5 m of massive -to-semi massive
pitchblende with minimum-greater-than-61,000 cps;
• AR-19-235c1 intersected 43.0 m of total composite mineralization including 7.15 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within a 93.0 m section (517.0 to 610.0 m). Additionally,
of the 7.15 m of off -scale mineralization intersected in the hole , 3.0 m of massive -to-semi massive
pitchblende with minimum-greater-than-61,000 cps;
• AR-19-236c2 intersected 26.0 m of total composite mineralization including 6.35 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within an 89.0 m section (579.0 to 668.0 m.
A3 High-Grade Domains
• AR-19-231c2 intersected 48.0 m of total composite mineralization including 5.75 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within a 102.0 m section (469.0 to 571.0 m);
• AR-19-232c3 intersected 26.0 m of total composite mineralization including 5.1 m of total composite
off-scale radioactivity (>10,000 to >61,000 cps) within an 89.0 m section (560.0 to 649.0 m).
Drill hole locations and schematics are shown in Figures 1 to 2, drilling results can be found in Table 1. Drill hole
descriptions can be found at www.nexgenenergy.ca
Development, Permitting, Appointments, Activities & Financial
• Expediting Arrow to Feasibility by a 2-stage (10 rig) high density drilling program focused on mine
optimization plans based on Measured and Indicated mineral resources.
• As reported on April 29, 2019, NexGen received acceptance of the Rook I Project Description (Technical
Proposal) by the Canadian Nuclear Safety Commission ("CNSC") and the Saskatchewan Ministry of
Environment ("MOE"). The acceptance marked the commencemen t of an Environmental Assessment
("EA") on the Rook I Project (the "Project") in accordance with the requirements of both The
Environmental Assessment Act (Province of Saskatchewan) and the Canadian Environmental
Assessment Act, 2012 "CEAA 2012" (Governmen t of Canada). The EA is being conducted through a
coordinated process between the MOE and the CNSC, which is the Federal life -cycle regulator for all
uranium mine and mill projects in Canada. In addition, NexGen filed an Initial Licence Application with
the CNSC under the Nuclear Safety and Control Act in order to obtain a Licence to Prepare Site and
Construct for the Project.
• The Company also announces the appointments of Gillian McCombie, Vice President Human Resources
and Arthur Lieu, MSc., P.Eng., Vice President Processing and Metallurgy. Gillian brings over 25 years of
experience in human resources in the international mining and telecommunications sectors. Gillian most
recently as Vice President Human Resources at Capstone Mining and prior to that with Telus and Placer
Dome. Arthur joins NexGen having spent 20 years in mine processing and metallurgy. Most recently, he
was the Chief Metallurgist at Cameco’s Rabbit Lake mill and Orano’s McClean Lake mill. Arthur holds a
Bachelor of Science degree in Chemical Engineering and a Master of Science degree in Geochemistry,
with a focus on source -term characteristic of uranium was te rock piles at Cameco Key Lake uranium
mine. Mr. Lieu is also trained in Lean Six Sigma Black Belt process improvement and optimization.
Mr. Lieu is a registered Professional Engineer (P. Eng) with the Association of Professional Engineers and
Geoscientists of Saskatchewan (APEGS).
• The Company had cash-on-hand of approximately $90 million which fully funds NexGen for all drilling,
feasibility and development programs planned this year.
Leigh Curyer, Chief Executive Officer, commented: “These continuing high grade results received from sections
of the ore body focused on the mine plan , highlight the extraordinary high grade and robustness of Arrow. In
parallel, the Feasibility-stage engineering, metallurgical and environmental studies are all advancing extremely
well, together with permitting and our community programs. I would like to take the opportunity to also welcome
Arthur and Gill to the dedicated NexGen team. Two highly experienced and successful professionals in their
respective fields joining NexGen at an incredibly exciting time as we begin to see positive signs emerging in the
uranium market.”
Troy Boisj oli, Vice -President, Operations and Project Development, commented: “The cont inuity of
mineralization within the high-grade core of Arrow is remarkable and these results highlight the technical
advantages at the Arrow Deposit: mineralization hosted within stacked shear system (allowing holes to intersect
multiple targets with one drill hole, minimizing total meterage), stable crystalline basement host rock, and
extremely high-grades. These high grade results in all twenty holes will be incorporated into an updated Mineral
Resource Estimate which will form the basis of the Feasibility Study, scheduled for release in H1 2020.”
Figure 1: Arrow Deposit Drill Hole Locations
Figure 2: A2 and A3 Indicated Shells with Mine Schematic and Drill Hole Traces
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-19-225c3 327 -65 283 N/A 452.5 454 1.5 <500 - 46000
481 481.5 0.5 <500 - 800
488 490 2 <500 - 700
494.5 498 3.5 <500 - 1050
501 501.5 0.5 <500 - 1200
586.5 602 15.5 <500 - 61000
610 610.5 0.5 <500 - 550
615.5 618.5 3 <500 - 1800
AR-19-229c1 327 -65 693 132.8 473 475 2 <500 - 1200
480.5 481 0.5 <500 - 600
488.5 489 0.5 1000 - 13000
495 495.5 0.5 <500 - 1240
501 502 1 <500 - 41500
504.5 509 4.5 <500 - 20200
511.5 513 1.5 <500 - 4000
516.5 520 3.5 <500 - 19800
522.5 533 10.5 <500 - 61000
535.5 538.5 3 <500 - 49000
543.5 546.5 3 <500 - 61000
549.5 550 0.5 1230 - 61000
570 570.5 0.5 <500 - 540
628.5 634 5.5 <500 - 61000
638 638.5 0.5 <500 - 610
642 645.5 3.5 <500 - 61000
651 675.5 24.5 <500 - 61000
AR-19-229c2 327 -65 309 N/A 494.5 495 0.5 <500 - 700
500.5 501 0.5 <500 - 2150
505 505.5 0.5 <500 - 680
508 508.5 0.5 <500 - 31000
514 514.5 0.5 <500 - 9400
517.5 519 1.5 <500 - 6000
524.5 525.5 1 <500 - 4000
530 536.5 6.5 <500 - 8590
541.5 542.5 1 580 - 52500
545 545.5 0.5 <500 - 3200
550.5 562.5 12 <500 - 61000
574.5 577 2.5 <500 - 2000
625 671.5 46.5 <500 - 61000
AR-19-229c3 327 -65 240 N/A 494.5 496 1.5 <500 - 14900
502 503 1 <500 - 53300
506.5 507.5 1 <500 - 19500
510 510.5 0.5 <500 - 800
513.5 514 0.5 <500 - 1100
517 518 1 <500 - 12100
522 524.5 2.5 <500 - 2800
529 531 2 <500 - 32600
539.5 541.5 2 <500 - 14100
544.5 549.5 5 <500 - 47900
558 561 3 <500 - 61000
563.5 565 1.5 <500 - 14000
571 573 2 <500 - 2100
579 586 7 <500 - 1500
592.5 594.5 2 <500 - 610
629.5 645.5 16 <500 - 61000
648 651.5 3.5 <500 - 4400
654 680 26 <500 - 61000
683 683.5 0.5 <500 - 1350
705 707 2 <500 - 930
711.5 718 6.5 <500 - 1300
AR-19-229c4 327 -65 465 N/A 404 405.5 1.5 <500 - 600
415.5 416 0.5 <500 - 820
464 466 2 <500 - 3150
471.5 472.5 1 <500 - 2300
480 486.5 6.5 <500 - 61000
489 489.5 0.5 <500 - 1300
494 499 5 <500 - 18600
501.5 505 3.5 <500 - 32000
508.5 510.5 2 <500 - 43000
516.5 531.5 15 <500 - 39000
613.5 652.5 39 <500 - 61000
AR-19-230c1 327 -65 651.5 128.35 499 499.5 0.5 <500 - 4800
502 502.5 0.5 <500 - 1200
515.5 522 6.5 <500 - 3200
524.5 532.5 8 <500 - 1700
566 566.5 0.5 <500 - 550
571 572 1 <500 - 1300
577 598.5 21.5 <500 - 61000
603 605.5 2.5 <500 - 1200
608 608.5 0.5 <500 - 1650
611 611.5 0.5 <500 - 1160
622 628.5 6.5 <500 - 1800
631.5 632 0.5 <500 - 6600
AR-19-230c2 327 -65 252.5 N/A 484 484.5 0.5 <500 - 750
496.5 501 4.5 <500 - 50200
522.5 523 0.5 <500 - 575
552 556.5 4.5 <500 - 740
559 563 4 <500 - 1400
570.5 572 1.5 <500 - 620
586 609.5 23.5 <500 - 61000
613.5 614.5 1 <500 - 3200
617 618 1 <500 - 750
621.5 630 8.5 <500 - 15600
636 636.5 0.5 <500 - 970
AR-19-230c3 327 -65 234 N/A 458 458.5 0.5 <500 - 1030
461.5 463.5 2 <500 - 820
474.5 475 0.5 <500 - 680
487 487.5 0.5 <500 - 910
504 504.5 0.5 <500 - 1030
521.5 524 2.5 <500 - 730
561.5 562.5 1 <500 - 1310
567.5 568 0.5 <500 - 510
592 614.5 22.5 <500 - 61000
619.5 623.5 4 <500 - 1280
626.5 628.5 2 <500 - 14500
654.5 655 0.5 <500 - 540
AR-19-231c1 327 -65 564.5 138 466 470.5 4.5 <500 - 14000
487.5 488 0.5 <500 - 500
497 505 8 <500 - 46000
510.5 511 0.5 <500 - 900
515.5 528 12.5 <500 - 58000
AR-19-231c2 327 -65 222.5 N/A 467.5 472.5 5 <500 - 38000
480.5 481 0.5 500 - 7500
485 488 3 <500 - 2700
491 493.5 2.5 <500 - 3100
498.5 499 0.5 500 - 6200
505.5 546.5 41 <500 - 61000
555 555.5 0.5 <500 - 770