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Eagle Plains and Sun Summit Minerals Execute Option Agreement for the Theory Copper-Gold Project, British Columbia

Mergers & Acquisitions Property Options & Staking

Eagle Plains and Sun Summit Minerals Execute Option Agreement for

the Theory Copper-Gold Project, British Columbia

Cranbrook, B.C., March 17th, 2025: Eagle Plains Resources Ltd. (TSX -V:EPL) (“EPL” or “Eagle

Plains”) and Sun Summit Minerals Corp. (TSX -V: SMN; OTCQB: SMREF) (“SMN” or “Sun

Summit”) are pleased to announce that further to their respective news releases dated January 13, 2025 the

parties have entered into an option agreement (the “Option”) dated February 13, 2025, pursuant to which

Sun Summit has been granted the exclusive right to acquire up to a 100% interest in the Eagle Plains’

wholly-owned Theory copper-gold project (“the Project”).

The 9676ha Theory Project is considered to be highly prospective for both epithermal gold and copper -

gold porphyry deposits. The Project is located in north -central B.C. within the Toodoggone Mining

District, and is in close proximity with Sun Summit’s JD Project. The project area shares similar geology

to the JD Project and Thesis Gold’s Ranch-Lawyers Projects. The property is owned 100% by Eagle Plains,

with 122 hectares of the property subject to an underlying 0.5% Net Smelter Royalty held by a third party.

To exercise the Option, Sun Summit must make a series of cash payments and share issuances to Eagle

Plains and fund exploration expenditures on the Project. These payments, share issuance and expenditures

are separated into two phases, with the first Option entitling the Company to acquire a 75% interest in the

Project by paying CA$2 55,000, issuing an aggregate of 750,000 common shares to EPL and funding

CA$3,000,000 in exploration expenditures on the Project by over a four -year term, including diamond

drilling in years three and four. Pursuant to the second phase of the Option, the Company may acquire an

additional 25% interest in the Project (for a 100% total interest) by notifying Eagle Plains of its intent to

increase its interest to 100% and making an additional one -time payment of CDN$ 1,000,000 cash, of

which half may be paid in Sun Summit shares valued at the time of notification.

If the First Option or the Second Option is exercised, a 2% smelter returns royalty will be granted to the

Eagle Plains over the entire property, 1% of which may be repurchased for CA$1,000,000. Following the

exercise of the First Option by the Company, the Company and the Vendor will form a joint venture which

will administer the continued exploration and operation of the Project.

Eagle Plains will serve as Operator under the terms of Option 1 and will reserve the right to use Terralogic

Exploration Services as geoscience consultant. Following the exercise of Option 1 and in the event of

failure to exercise Option 2, Sun Summit and EPL shall then form a 75/25 joint venture (“JV”) to further

explore and develop the Property.

Following a target identification exercise, an exploration plan and budget will be defined for the 2025

season. Minimum expenditures in 2025 are $200,000 with work expected to be conducted from the JD

camp. A new mineral exploration permit (“MX permit”) will need to be secured for any future diamond

drilling. The application process will be initiated by Sun Summit shortly after execution of th is formal

agreement.

Chuck Downie, President and CEO of Eagle Plains, commented: “We are excited to partner with the Sun

Summit team to advance the Theory Project. Recent success by Sun Summit at their adjacent JD project,

as well as spectacular drillhole intercepts from Amarc Resources at the nearby Joy Project underline the

Toodoggone District as one of the premier copper -gold exploration camps in North America. Attracting

Sun Summit to advance the early-stage Theory project after EPL completed a single, low-cost exploration

program, validates Eagle Plains’ project generator model.”

Niel Marotta, CEO of Sun Summit, commented: “We are pleased to finalize the Theory Option Agreement.

This enlarged district scale Copper-gold project represents an exciting opportunity to revive exploration

in the northern part of the Toodoggone mining district. We wish to thank Eagle Plains for hav ing the

business acumen to acquire an extensive land package with regional exploration targets.

This deal, combined with the JD property, adds to the potential for a significant discovery and significantly

enhances our strategic position in the Toodoggone Mining District. By combining the Theory and JD

Projects, we create a district -scale opportunity with exceptional exploration potential and significant

logistical synergies. The option terms are both manageable and structured, allowing us to maintain

financial flexibility while advancing exploration efforts. This acquisition aligns with our goal of b uilding

a robust, diversified portfolio in this highly active mining district, and we look forward to unlocking the

full potential of these assets.”

See Theory Project Information and Map here

The 9676ha Theory Property is located in northern BC within the Toodoggone Mining District. The

district is endowed with both epithermal gold and porphyry copper -gold deposits, most notably the past

producing Kemess Mine owned by Centerra Gold. The Omineca Resource Road provides access to the

region from Mackenzie, BC. Recent road upgrades completed in 2023 by Thesis Gold on their Lawyers -

Ranch Project brought road access to within 8 kms of the Theory property.

Geology in the Theory region is primarily comprised of lower Jurassic Hazelton Group volcanics which

unconformably overlie late Triassic Takla Group volcanics. The entire package of rocks is intruded by late

Triassic and early Jurassic stocks. The majority of the Theory property encompasses the highly prospective

Jurassic-Triassic unconformity (~200 Ma), termed by the BC Geologic Survey as the ‘Red-Line’, which is

known to have a high spatial correlation to many of the known deposits throughout the Golden T riangle

and Toodoggone.

Exploration by previous operators has been intermittent since the mid -1960’s and regional government

surveys are sparse, however encouraging mineralization and alteration commonly associated with both

epithermal and porphyry systems has been documented. Th e most significant documented work was

completed in 1988 in the north and west areas of the Theory project area. Work consisted primarily of

alpine ridge and subalpine prospecting traverses as well as reconnaissance soil sample lines in areas

where no outcrop was present. This work documented occurrences of low -sulphidation epithermal -

related mineralization including quartz-barite veins with up to 8.2 g/t Au, 195 g/t Ag, and 6.2% Cu at

the DM occurrence (BC Minfile 094E 231)*; and a quartz carbonate vein system with up to 6.8 g/t Au

and 1,480 g/t Ag at the Fred-1 occurrence (BC Minfile 094E 402)*. The BEV occurrences (BC Minfile

094E 259)*, interpreted as a Cu-Au porphyry target, returned select historical rock results up to 0.47%

Cu, 10.5 g/t Ag, and 0.13 g/t Au . Detailed soils revealed a 1.6 by 2 kilometre copper -in-soil anomaly

with peak soil results to 920 ppm Cu. Very little work is documented in the south and eastern parts of

the property.

Exploration success in the area has been highlighted by the recent announcement by Thesis Gold at their

Lawyers-Ranch Project of a combined Measured and Indicated Mineral Resource of 4.0 Moz and an

Inferred Mineral Resource of 727 Koz at respective grades of 1.51 and 1.82 g/t AuEq. (Thesis Gold, May

1, 2024 News Release)

In late 2023 Eagle Plains acquired the property through staking and third -party agreements. After

undertaking initial compilation and interpretation of historical data on the project, Eagle Plains completed

a property wide, high resolution airborne magnetic and radiometric survey in July 2024.

Management cautions that historical results were collected and reported by past operators and have not

been verified nor confirmed by a Qualified Person but form a basis for ongoing work on the subject

properties. Management cautions that past results or discoveries on proximate land are not necessarily

indicative of the results that may be achieved on the subject properties.

Qualified Persons

Charles C. Downie, P.Geo., a “qualified person” for the purposes of National Instru ment 43 -101 -

Standards of Disclosure for Mineral Projects and a director of Eagle Plains, has reviewed and approved

the scientific and technical disclosure in this news release.

About Eagle Plains Resources

Based in Cranbrook, B.C., Eagle Plains is a well -funded, prolific project generator that continues to

conduct research, acquire and explore mineral projects throughout western Canada, with a focus on critical

metals integral to an increasingly electrified, decarbonized economy.

The Company was formed in 1992 and is the ninth -oldest listed issuer on the TSX -V (and one of only

three that has not seen a roll -back or restructuring of its shares). Eagle Plains has continued to deliver

shareholder value over the years and through numer ous spin outs has transferred over $100,000,000 in

value directly to its shareholders, with Copper Canyon Resources and Taiga Gold Corp. being notable

examples. Eagle Plains latest spinout; Eagle Royalties Ltd. (CSE:“ER”) was listed on May 24, 2023,

and holds a diverse portfolio of royalty assets throughout western Canada.

On October 2, 2024, Eagle Plains announced announce the formation of a separate division within the

Company that will give Eagle Plains’ shareholders direct exposure to strategic opportunities in Canadian

green energy transition. As a wholly owned subsidiary of Eagle Plains, Osprey Power Inc. (“OP”) will

focus on identifying and advancing innovative and diverse clean energy project portfolios in target markets

throughout Canada, with an initial focus on Western Canada.

Eagle Plains’ core business is acquiring grassroots critical- and precious-metal exploration properties. The

Company is committed to steadily enhancing shareholder value by advancing our diverse portfolio of

projects toward discovery through collaborative partnerships and development of a highly experienced

technical team.

Expenditures from 2010-2023 on Eagle Plains-related projects exceed $38M, the majority of which was

funded by third -party partners. This exploration work resulted in approximately 50,000m of diamond -

drilling and extensive ground-based exploration work facilitating the advancement of numerous projects

at various stages of development.

Throughout the exploration process, our mission is to help maintain prosperous communities by exploring

for and discovering resource opportunities while building lasting relationships through honest and

respectful business practices.

On behalf of the Board of Directors

“C.C. (Chuck) Downie” P.Geo

President and CEO

For further information on EPL, please contact Mike Labach at 1 866 HUNT ORE (486 8673)

Email: [email protected] or visit our website at https://www.eagleplains.com

Cautionary Note Regarding Forward-Looking Statements

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX

Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. This news release may contain

forward-looking statements including but not limited to comments regarding the timing and content of upcoming work

programs, geological interpretations, receipt of property titles, potential mineral recovery processes, etc. Forward -looking

statements address future events and conditions and therefore, involve inherent risks and uncertainties. Actual results may

differ materially from those currently anticipated in such statements.