1. TSX-V: ATC
Corporate Presentation
June 2023

2. TSX-V:ATC
Forward-Looking Statements
2
FORWARD-LOOKING STATEMENTS
This presentation contains forward-looking information. Forward looking information contained in this presentation includes, but is not limited to, statements with respect to: (i) the
estimation of inferred and indicated mineral resources; (ii) the success of exploration activities; (iii) the results of the PEA including statements about future production, future
operating and capital costs, the projected IRR, NPV, payback period, and production timelines for the Tiger Deposit.
These statements are based on information currently available to ATAC Resources Ltd. (“ATAC”) and ATAC provides no assurance that actual results will meet management’s
expectations. In certain cases, forward-looking information may be identified by such terms as "anticipates", "believes", "could", "estimates", "expects", "may", "shall", "will", or
"would". Forward-looking information contained in this presentation is based on certain factors and assumptions regarding, among other things, the estimation of mineral
resources, the realization of resource estimate, gold metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and
sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Tiger
Deposit in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental
assessment process, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While ATAC considers these
assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.
Forward-looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of ATAC to be
materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the
exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining
operations may not commence at the Tiger Deposit, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development
activities, risks relating to changes in gold prices and the worldwide demand for and supply of gold, risks related to increased competition in the mining industry generally, risks
related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks
inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that
might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization
and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Tiger Deposit may not be available on satisfactory terms,
or at all, risks related to disputes concerning property titles and interest, and environmental risks. This list is not exhaustive of the factors that may affect any of ATAC's forward-
looking information. These and other factors should be considered carefully and readers should not place undue reliance on ATAC's forward-looking information. ATAC does not
undertake to update any forward-looking information that may be made from time to time by ATAC or on its behalf, except in accordance with applicable securities laws.
TECHNICAL DISCLOSURE
It should be noted that the Tiger Deposit PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the
economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the PEA forecast will be realized or that any of
the resources will ever be upgraded to reserves. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. Additional information about the
Tiger Deposit PEA is summarized in ATAC’s February 27, 2020 technical report titled “Technical Report and Preliminary Economic Assessment for the Tiger Deposit, Rackla Gold
Project, Yukon, Canada”, which can be viewed at www.sedar.com under the ATAC profile or on the ATAC website at www.atacresources.com. Additional information about the
Osiris Resource Estimate is summarized in ATAC’s July 28, 2022 technical report titled “Technical Report and Estimate of Mineral Resources for the Osiris Project, Yukon,
Canada” which can be viewed at www.sedar.com under the ATAC profile or on the ATAC website at www.atacresources.com. Historical information for the PIL property relies on
disclosure from previous operators and has not been independently verified.
QUALIFIED PERSON
Adam Coulter, M.Sc., P.Geo., ATAC’s Vice President of Exploration, is a qualified person for the purposes of National Instrument 43-101. All technical information contained in this
presentation has been approved by Adam Coulter.
TRUE WIDTHS
True widths for diamond drill holes are estimated to be 30% - 100% of intersected widths. RAB drill hole intersections are drilled thicknesses and true widths are unknown.
Exploring for Copper and Gold in Yukon and BC

3. TSX-V:ATC
Corporate Overview
3
Share Structure*
Shares Outstanding 222,500,943
Fully Diluted 254,630,296
Options ($0.16 - $0.30) 9,925,000
Warrants ($0.22 - $0.24) 23,204,353
Working Capital C$3.5M
52-Week Range 0.065 – 0.165
200-Day Moving Average 0.11
* Share Structure as at May 26, 2023
Recent Financings
Shares Issued* Proceeds
November 2022 11,111,111 @ $0.09/share (FT) ~$1.0M
April 2022 25,000,000 @ $0.16/share (FT) ~$4.0M
Significant Holders
Barrick Gold Corporation 12.5%*
MM Asset Management, Inc. 9.7%**
Konwave Gold Equity Fund 2.5%***
LF Ruffer Gold Fund 1.6%****
* As at May 26, 2023 ** As at March 31, 2023 *** As at September 30, 2022 **** As at January 31, 2023
Exploring for Copper and Gold in Yukon and BC
Experienced Management
Graham Downs, President & CEO – Over 25 years in the junior mining sector
Jasmine Lau, CPA, CFO – Charted Professional Accountant with extensive resource sector experience
Rob Carne, P.Geo, Chairman – Former President of ATAC
Ed Cope, Technical Advisor – Formerly VP Exploration, North America for Barrick Gold Corporation
Adam Coulter, P.Geo., VP Exploration – Over 10 years of exploration experience
Andrew Carne, P.Eng., VP Corporate & Project Development – Over 10 years of exploration experience
* FT = Flow-Through Shares

4. TSX-V:ATC
Proposed Hecla Transaction
4
Exploring for Copper and Gold in Yukon and BC
Definitive Agreement announced April 6,
2023 regarding a Proposed Transaction
ATAC shareholders will receive shares in new
copper-gold YK/BC exploration company
called Cascadia Minerals
Acquisition of ATAC for 0.0166 Hecla Shares
and 0.1 Cascadia shares per ATAC share
Cascadia will hold ATAC’s interests in Catch,
PIL, Idaho Creek and Rosy properties, and
ATAC’s remaining cash after transaction
expenses
Hecla will make C$2M strategic investment
in SpinCo for 19.9% of shares and a right of
first refusal on existing projects
A shareholder meeting is scheduled for June
23, 2023 at 10:00 AM (Vancouver Time)
The transaction is expected to close in early
July 2023, if approved
80.1% interest in Cascadia
to ATAC Shareholders

5. TSX-V:ATC
Grassroots discovery at the Catch Property in
Yukon, with high-grade Cu-Au in outcrop (3.03% Cu
with 4.46 g/t Au) across extensive areas.
Rosy Property in Yukon hosts numerous low
sulphidation epithermal quartz-carbonate veins
with rock samples grading up to 12.55 g/t gold with
93.10 g/t silver
PIL Property in BC hosts multiple untested Cu-Au-
Mo porphyry and epithermal Au-Ag targets.
Located in the heart of the Toodoggone, one of
BC’s hottest exploration districts.
>2,500 m of diamond drilling planned for Catch in
2023, the first ever diamond drill program at this
property
5
Property Overview
Exploring for Copper and Gold in Yukon and BC
Idaho Creek Property (under option to Makara
Mining) is located in Yukon adjacent to Western
Copper and Gold’s Casino Property, and is
prospective for copper-gold mineralization

6. TSX-V:ATC
Catch Property Overview
6
• New copper-gold discovery in underexplored
extension of the Stikine terrane from BC
• 5,000 x 500 m copper-gold-in-soil anomaly
• Rock samples have peak values of 3.06%
copper, 14.6 g/t gold, 228 ppm molybdenum
and 89 g/t silver
• Main zone hosts copper and gold in outcrop
across a >500 m extent
• 2022 discovery of a mineralized diorite
porphyry 2 km south of the Main Zone
Exploring for Copper and Gold in Yukon and BC
Sample F311397: 1.26% copper and 0.56 g/t gold
Yukon
Chalcopyrite-Bornite-Pyrite in outcrop
Malachite+Azurite in hand pit

7. TSX-V:ATC
Catch Property – Copper-in-Soil
7
Exploring for Copper and Gold in Yukon and BC
Yukon
• High-grade copper and gold along a >5 km trend
• 2,500 m of diamond drilling planned for 2023

8. TSX-V:ATC
Catch Property – Main Zone
8
Exploring for Copper and Gold in Yukon and BC
Yukon

9. TSX-V:ATC
Catch Property – Diorite Zone
9
Exploring for Copper and Gold in Yukon and BC
Yukon
• Compelling grades in diorite porphyry outcrop
• Pronounced magnetic low underlying diorite zone
• Priority drill target for 2023

10. TSX-V:ATC
Catch Property – IP Chargeability Section
10
Exploring for Copper and Gold in Yukon and BC
Yukon
• Strong chargeability anomalies under Main Zone
• RC holes did not reach target depths
• Diamond drilling planned in 2023 to test IP at depth
2023 planned diamond drill holes

11. TSX-V:ATC
PIL Property Overview
11
Exploring for Copper and Gold in Yukon and BC
BC
Large, underexplored land package with
numerous highly prospective copper-gold
porphyry and epithermal gold-silver targets
Located in a prolific and highly active part
of BC’s Golden Horseshoe, amongst
multiple past producing mines and advanced
exploration projects
2022 prospecting returned 18.4% copper
with 111 g/t silver at the Spruce target
Sampling in 2022 at the PIL South target
returned 3.89% copper with 173 g/t silver in
a large underexplored 2.3 km x 1.5 km
copper-gold soil anomaly
Prospecting at the Atlas target returned 78.30
g/t gold with 2,830 g/t silver in outcrop, 400
m from a 2006 sample that returned 489.71
g/t gold with 6,514 g/t silver from a
brecciated bedrock source
Much of the property has not yet received
systematic fieldwork

12. TSX-V:ATC
PIL Property – Copper
12
Exploring for Copper and Gold in Yukon and BC
BC

13. TSX-V:ATC
Rosy Property Overview
13
Exploring for Copper and Gold in Yukon and BC
YK
61 km2 road accessible
property is located 77 km east of
Whitehorse and surrounds the
Red Mountain Molybdenum
deposit owned by Tintina Mines
Ltd.
Numerous low sulphidation
epithermal quartz-carbonate
veins occur on the property
Anomalous gold in soil over 3 x
2.5 km with untested high priority
follow up areas with significant
gold- and copper-in-soil
Rock samples have returned up
to 12.55 g/t gold with 93.10 g/t
silver
Potential for regional-scale
epithermal vein mineralization

14. TSX-V:ATC
The Rau Project hosts the advanced-stage Tiger
Gold Deposit with a PEA pre-tax NPV(5%) of
$118.2 M and IRR of 54.5%
Rackla Gold Property
14
The Nadaleen Project hosts Canada’s first Carlin-
type gold discoveries with an indicated resource of
732,000 ounces at 4.12 g/t Au and inferred resource of
1,044,000 ounces at 3.47 g/t Au at the Osiris Deposit
The Rackla Gold Property is ~1,700 km² and is
comprised of two separate projects: Nadaleen and
Rau.
Exploring for Copper and Gold in Yukon and BC
Both projects have significant exploration potential,
with numerous targets open to expansion and others
not yet drill tested
Yukon

15. TSX-V:ATC
Nadaleen Trend Location
15
Exploring for Copper and Gold in Yukon and BC
Nadaleen Project

16. TSX-V:ATC
Nadaleen and Carlin Trend Comparison
16
Exploring for Copper and Gold in Yukon and BC
100% Owned Carlin-Style Gold District
• High-grade Osiris Deposit resource
• 17 additional pre-resource targets
Nadaleen Project

17. TSX-V:ATC
Osiris Deposit – Carlin-Style Gold Resources
17
Total Indicated Resources: 732,000 ounces gold at an average grade of 4.12 g/t (5.5Mt)
Total Inferred Resources: 1,044,000 ounces gold at an average grade of 3.47 g/t (9.4Mt)
Includes the Conrad, Sunrise, Osiris, and Ibis Zones
Pit-Constrained Indicated Resources: 604,000 ounces gold at an average grade of 4.03 g/t (4.7Mt)
Pit-Constrained Inferred Resources: 530,000 ounces gold at an average grade of 3.07 g/t (5.4Mt)
Nadaleen Project
Exploring for Copper and Gold in Yukon and BC

18. TSX-V:ATC
Osiris Deposit Drill Highlights
18
Exploring for Copper and Gold in Yukon and BC
Nadaleen Project
2022 Exploration:
• 1,550 m diamond drilling
• Highlight 33.20 m of 2.63 g/t Au
(See Nov 1, 2022 News Release)

19. Thank you

20. TSX-V:ATC
Osiris Resource Sensitivity
Total ATAC Mineral Inventory
APPENDIX
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21
22
23
Management & Directors
Exploring for Copper and Gold in Yukon and BC

21. TSX-V:ATC
Management & Directors
21
Graham Downs, President & CEO, Director
23 years of Yukon mineral exploration experience
Director of Trifecta Gold
Adam Coulter, VP Exploration
Professional Geologist, working in mineral exploration and
development since 2012
Andrew Carne, VP Corporate & Project Development
Professional Engineer, working in mineral exploration and
development since 2012
Vice President of the Yukon Chamber of Mines
Jasmine Lau, Chief Financial Officer
Chartered Professional Accountant with extensive resource
sector experience
Ed Cope, Technical Advisor
21 years with Barrick Gold Corporation; retired
as VP Exploration for North America in 2016
Bill Wengzynowski, Geological Consultant
30+ years of Yukon-focused exploration experience
Two-time recipient of Yukon Prospector of the Year award
Rob Carne, Chairman
Former President of ATAC and part of the Rackla Gold Project
discovery team
Bruce Youngman, Director
President and COO of Canplats Resources; acquired by Goldcorp
Former VP and director of Northern Dynasty Minerals
Don Poirier, Director
Former VP Corporate Development for Hecla Mining
Glenn Yeadon, Secretary & Director
34 years as a partner or associate of Tupper, Jonsson & Yeadon
James Gray, Director
Managing partner of De Visser Gray LLP with extensive experience
in accounting and auditing for junior resource companies
Maureen Upton, Director
20 years of experience in ESG strategy and implementation with
multinational natural resource corporations and financial institutions
Exploring for Copper and Gold in Yukon and BC

22. TSX-V:ATC
Total ATAC Mineral Inventory
22
Classification Constraint Gold Cut-Off Tonnes Grade (Au g/t) Gold (oz)
Indicated
Open Pit 1.00 g/t 4,658,000 4.03 604,000
Underground 2.00 g/t 870,400 4.58 128,000
Total Indicated 5,528,400 4.12 732,000
Inferred
Open Pit 1.00 g/t 5,370,000 3.07 530,000
Underground 2.00 g/t 3,990,000 4.01 514,000
Total Inferred 9,360,000 3.47 1,044,000
Osiris Inferred Resources*
Tiger Measured and Indicated Resources*
Type Constraint Classification Gold Cut-off Tonnes Grade (Au g/t) Gold (oz)
Oxides Open Pit Indicated 0.75 g/t 1,980,000 3.74 238,000
Underground Indicated 1.50 g/t 165,000 3.09 16,000
Sulphides Open Pit Measured 0.75 g/t 799,000 2.92 75,000
Open Pit Indicated 0.75 g/t 847,000 2.68 73,000
Underground Measured 1.50 g/t 29,000 2.06 2,000
Underground Indicated 1.50 g/t 706,000 2.64 60,000
Total M+I 4,526,000 3.19 464,000
*See page 2 for 43-101 Technical Report disclosure
Exploring for Copper and Gold in Yukon and BC

23. TSX-V:ATC
Osiris Resource Sensitivity*
23
Indicated Inferred
Gold Cut-Off
(g/t)
Tonnes Grade (Au g/t) Gold (Ounces) Tonnes Grade (Au g/t) Gold (oz)
0.5 5,705,000 3.43 629,000 8,354,000 2.22 597,000
1.0 4,658,000 4.03 604,000 5,370,000 3.07 530,000
1.2 4,385,000 4.22 595,000 4,820,000 3.29 510,000
1.3 4,247,000 4.32 590,000 4,558,000 3.41 499,000
1.4 4,105,000 4.42 583,000 4,312,000 3.53 489,000
1.6 3,839,000 4.62 570,000 3,813,000 3.79 465,000
1.8 3,583,000 4.83 556,000 3,360,000 4.07 440,000
2.0 3,342,000 5.04 541,000 3,003,000 4.33 418,000
2.5 2,793,000 5.59 502,000 2,261,000 5.01 364,000
3.0 2,270,000 6.23 455,000 1,775,000 5.62 321,000
Pit Constrained Cut-Off Sensitivity
Underground Cut-Off Sensitivity
*See page 2 for 43-101 Technical Report disclosure
Nadaleen Project
Exploring for Copper and Gold in Yukon and BC
Indicated Inferred
Gold Cut-Off
(g/t)
Tonnes Grade (Au g/t) Gold (Ounces) Tonnes Grade (Au g/t) Gold (oz)
1.0 1,227,000 3.68 145,200 6,114,000 3.15 619,000
1.2 1,155,700 3.88 144,200 5,714,000 3.29 605,000
1.3 1,125,700 3.90 141,200 5,530,000 3.36 598,000
1.4 1,097,000 4.00 141,200 5,330,000 3.44 589,000
1.6 1,021,400 4.14 136,100 4,901,000 3.60 568,000
1.8 939,400 4.37 132,100 4,447,000 3.80 544,000
2.0 870,400 4.58 128,100 3,990,000 4.01 514,000
2.5 712,000 5.07 116,100 2,997,000 4.62 445,000
3.0 566,300 5.72 104,100 2,243,000 5.23 377,000
4.0 393,300 6.73 85,100 1,314,000 6.49 274,000