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Skeena Discovers Mineralization at Eskay Deeps

Drill Results

Skeena Discovers Mineralization at Eskay Deeps

Vancouver, BC (September 15, 2020) Skeena Resources Limited (TSX: SKE, OTCQX: SKREF)

(“Skeena” or the “Company”) is pleased to announce the discovery of high -grade gold -silver

mineralization hosted 600 m below surface in the newly recognized Eskay Deeps prospect. Results

presented here are from widely spaced deep exploration diamond drill holes into both the Eskay

Deeps, hosted in the newly recognized Even Lower Mudstone (“ELM”) unit and the Water Tower Zone

(“WTZ”). Six helicopter-supported drill rigs are currently active for the 2020 Phase I program focused

in the 21A, 21B and 21C Zones for Pre-Feasibility Study (“PFS”) resource category conversions at the

Eskay Creek Project (“Eskay Creek” or the “Project") located in the Golden Triangle of British

Columbia. Reference images are presented at the end of this release as well as on the Compa ny’s

website.

Eskay Creek Exploration Drilling Highlights:

Eskay Deeps

• 5.72 g/t Au, 12 g/t Ag (5.88 g/t AuEq) over 17.00 m (SK-20-257)

o Including: 20.29 g/t Au, 37 g/t Ag (20.78 g/t AuEq) over 3.50 m

• 15.38 g/t Au, 11 g/t Ag (15.53 g/t AuEq) over 3.18 m (SK-20-257)

o Including: 44.60 g/t Au, 28 g/t Ag (44.97 g/t AuEq) over 1.00 m

o 17.45 g/t Au, 10 g/t Ag (17.58 g/t AuEq) over 1.38 m

Water Tower Zone

• 12.67 g/t Au, 22 g/t Ag (12.96 g/t AuEq) over 14.50 m (SK-20-289)

o Including: 28.70 g/t Au, 29 g/t Ag (29.09 g/t AuEq) over 1.30 m

• 5.75 g/t Au, 14 g/t Ag (5.94 g/t AuEq) over 11.00 m (SK-20-289)

o Including 13.25 g/t Au, 23 g/t Ag (13.56 g/t AuEq) over 1.50 m

Gold Equivalent (AuEq) calculated via the formula: Au (g/t) + [Ag (g/t) / 75]. True widths cannot be estimated at this time due to a lack of information.

Length weighted AuEq composites were constrained by geological considerations. Grade capping of individual assays has not been applied to the

Au and Ag assays informing the length weighted AuEq composites. Processing recoveries have not been applied to the AuEq calculation and are

disclosed at 100%. Samples below detection limit were nulled to a value of zero. WTZ – Water Tower Zone, NWTZ – New Water Tower Zone, LM

– Lower Mudstone, DEEPS – Eskay Deeps.

Multiple Mineralized Zones Identified in New Eskay Deeps

Exploration drilling has intersected significant mineralization in the recently recognized Eskay Deeps

prospect, situated 600 m vertically below surface in a previously unexplored area of the Project. This

previously unidentified mineralization occurs greater than 260 m vertically below the lower extents of

the currently modelled WTZ and is open in all directions. Minerali zation in this new area occurs as

discordant, pyritic replacements devoid of impurities (Hg -As-Sb) and is hosted within the ELM and

Lower Andesite sequence. The intersected apparent thickness of the ELM at this location is

NR: 20-26 | September 15, 2020

approximately 125 m. Due to a lac k of any other supporting drill holes in this new area, true widths

cannot yet be estimated.

Water Tower Zone Expanded by Drilling – New Mineralized Feeder Structure

The known mineralization in the WTZ has been expanded downdip by this recent drilling. Up -hole of

the main WTZ, another new occurrence of feeder -style, discordant mineralization was intersected to

the west, hosted within intensely sericitized and silicifie d rhyolite breccias. This newly found

mineralization potentially represents a previously unidentified second syn -volcanic feeder structure

parallel to the WTZ. At greater depths, a substantial thickness (160 m), of ELM was intersected

averaging only trace gold-silver mineralization. This remains very prospective.

“The discovery of multiple zones of ELM -hosted mineralization in the new Eskay Deeps adds

significant exploration upside to the current resource base”, comments Paul Geddes, P.Geo., the

Company’s Vice President Exploration & Resource Development. “Our success rate to date with only

a handful of exploratory drill holes emphasizes the untapped growth potential and magnitude of the

Eskay Creek mineralized system”.

About Skeena

Skeena Resources Limi ted is a junior mining company focused on developing the past -producing

Eskay Creek gold-silver mine located in Tahltan Territory in the Golden Triangle of northwest British

Columbia, Canada. The Company released a robust Preliminary Economic Assessment in late 2019

and is currently focused on infill and exploration drilling at Eskay Creek to advance the project to

Prefeasibility. Skeena is also exploring the past-producing Snip gold mine.

On behalf of the Board of Directors of Skeena Resources Limited,

Walter Coles Jr.

President & CEO

Qualified Persons

Exploration activities at the Eskay Creek Project are administered on site by the Company’s

Exploration Managers, Colin Russell, P.Geo. and Adrian Newton, P.Geo. In accordance with National

Instrument 43-101 Standards of Disclosure for Mineral Projects, Paul Geddes, P.Geo. Vice President

Exploration and Resource Development, is the Qualified Person for the Company and has prepared,

validated and approved the technical and scientific content of this news release. The Company strictly

adheres to CIM Best Practices Guidelines in conducting, documenti ng, and reporting the exploration

activities on its projects.

Quality Assurance – Quality Control

Once received from the drill and processed, all drill core samples are sawn in half, labelled and

bagged. The remaining drill core is subsequently securely stored on site. Numbered security tags are

applied to lab shipments for chain of custody requirements. The Company inserts quality control (QC)

samples at regular intervals in the sample stream, including blanks and reference materials with all

sample ship ments to monitor laboratory performance. The QAQC program was designed and

approved by Lynda Bloom, P.Geo. of Analytical Solutions Ltd., and is overseen by the Company’s

Qualified Person, Paul Geddes, P.Geo, Vice President Exploration and Resource Development.

Drill core samples are submitted to ALS Geochemistry’s analytical facility in North Vancouver, British

Columbia for preparation and analysis. The ALS facility is accredited to the ISO/IEC 17025 standard

for gold assays and all analytical methods incl ude quality control materials at set frequencies with

established data acceptance criteria. The entire sample is crushed and 1kg is pulverized. Analysis for

gold is by 50g fire assay fusion with atomic absorption (AAS) finish with a lower limit of 0.01 ppm and

upper limit of 100 ppm. Samples with gold assays greater than 100ppm are re -analyzed using a 50g

fire assay fusion with gravimetric finish. Analysis for silver is by 50g fire assay fusion with gravimetric

finish with a lower limit of 5ppm and upper limit of 10,000ppm. Samples with silver assays greater than

10,000ppm are re -analyzed using a gravimetric silver concentrate method. A selected number of

samples are also analyzed using a 48 multi -elemental geochemical package by a 4 -acid digestion,

followed by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP -AES) and Inductively

Coupled Plasma Mass Spectroscopy (ICP-MS) and also for mercury using an aqua regia digest with

Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP -AES) finish. S amples with sulfur

reporting greater than 10% from the multi -element analysis are re -analyzed for total sulfur by Leco

furnace and infrared spectroscopy.

Cautionary note regarding forward-looking statements

Certain statements made and information containe d herein may constitute “forward looking information” and “forward looking

statements” within the meaning of applicable Canadian and United States securities legislation. These statements and informat ion are

based on facts currently available to the Company and there is no assurance that actual results will meet management’s expectations.

Forward-looking statements and information may be identified by such terms as “anticipates”, “believes”, “targets”, “estimates”, “plans”,

“expects”, “may”, “will”, “could” or “would”. Forward-looking statements and information contained herein are based on certain factors

and assumptions regarding, among other things, the estimation of mineral resources and reserves, the realization of resource and

reserve estimates, metal prices, taxation, the estimation, timing and amount of future exploration and development, capital and operating

costs, the availability of financing, the receipt of regulatory approvals, environmental risks, title disputes and other matt ers. While the

Company considers its assumptions to be reasonable as of the date hereof, forward -looking statements and information are not

guarantees of future performance and readers should not place undue importance on such statements as actual events and results may

differ materially from those described herein. The Company does not undertake to update any forward-looking statements or information

except as may be required by applicable securities laws.

Neither the Toronto Stock Exchange nor the Investment Industry Regulatory Organization of Canada accepts responsibility for the

adequacy or accuracy of this release.

Table 1: Eskay Creek Project 2020 Length Weighted Drill Hole Gold and Silver Composites:

HOLE-ID FROM (m) TO (m) CORE LENGTH (m) AU (g/t) AG (g/t) AUEQ (g/t) ZONE

SK-20-256 359.50 362.50 3.00 7.52 72.00 8.48 WTZ

SK-20-256 431.00 432.50 1.50 9.04 40.00 9.57 LM

SK-20-256 632.00 632.50 0.50 14.75 <5 14.75 DEEPS

SK-20-257 611.00 628.00 17.00 5.72 11.96 5.88 WTZ

INCLUDING 611.00 614.50 3.50 20.29 36.81 20.78 WTZ

INCLUDING 611.00 612.30 1.30 39.90 55.00 40.63 WTZ

AND 612.30 613.35 1.05 15.80 36.00 16.28 WTZ

AND 627.00 628.00 1.00 13.30 27.00 13.66 WTZ

SK-20-257 633.00 633.58 0.58 10.45 14.00 10.64 DEEPS

SK-20-257 672.90 676.08 3.18 15.38 11.40 15.53 DEEPS

INCLUDING 672.90 673.90 1.00 44.60 28.00 44.97 DEEPS

SK-20-257 686.12 687.50 1.38 17.45 10.00 17.58 DEEPS

SK-20-257 688.07 689.00 0.93 9.86 32.00 10.29 DEEPS

HOLE-ID FROM (m) TO (m) CORE LENGTH (m) AU (g/t) AG (g/t) AUEQ (g/t) ZONE

SK-20-267 323.30 332.50 9.20 4.49 1.94 4.52 WTZ

INCLUDING 331.00 332.50 1.50 10.50 <5 10.50 WTZ

SK-20-267 436.40 437.00 0.60 5.39 27.00 5.75 WTZ

SK-20-289 244.50 255.50 11.00 5.75 13.91 5.94 NWTZ

INCLUDING 246.00 247.50 1.50 13.25 23.00 13.56 NWTZ

SK-20-289 362.00 376.50 14.50 12.67 21.74 12.96 WTZ

INCLUDING 362.00 362.70 0.70 13.10 28.00 13.47 WTZ

AND 362.70 364.00 1.30 20.00 56.00 20.75 WTZ

AND 364.00 365.50 1.50 17.20 23.00 17.51 WTZ

AND 367.00 368.50 1.50 14.10 8.00 14.21 WTZ

AND 368.50 369.50 1.00 13.00 9.00 13.12 WTZ

AND 371.40 372.70 1.30 28.70 29.00 29.09 WTZ

AND 373.20 374.45 1.25 12.70 25.00 13.03 WTZ

AND 374.45 375.25 0.80 10.60 78.00 11.64 WTZ

SK-20-289 463.00 464.00 1.00 6.63 <5 6.63 DEEPS

SK-20-289 465.50 467.00 1.50 5.42 7.00 5.51 DEEPS

SK-20-289 478.00 479.00 1.00 6.99 13.00 7.16 DEEPS

Gold Equivalent (AuEq) calculated via the formula: Au (g/t) + [Ag (g/t) / 75]. True widths cannot be estimated at this time due to a lack of information.

Length weighted AuEq composites were constrained by geological considerations. Grade capping of individual assays has not been applied to the

Au and Ag assays informing the length weighted AuEq composites. Processing recoveries have not been applied to the AuEq calculation and are

disclosed at 100%. Samples below detection limit were nulled to a value of zero. WTZ – Water Tower Zone, NWTZ – New Water Tower Zone, LM

– Lower Mudstone, DEEPS – Eskay Deeps.

Table 2: Mine Grid Drill Hole Locations and Orientations:

HOLE-ID EASTING NORTHING ELEVATION LENGTH AZIMUTH DIP

SK-20-256 9,701.0 10,997.0 856.9 758.1 86.6 - 61.0

SK-20-257 9,620.6 10,901.5 842.3 704.3 89.0 - 67.0

SK-20-267 9,701.4 10,996.8 830.3 764.0 92.8 - 67.4

SK-20-289 9,701.4 10,996.8 830.3 836.0 75.0 - 67.0