Eagle Plains’ Partner Sun Summit Minerals Commences Fieldwork at the Theory Project, Toodoggone District, BC
Eagle Plains’ Partner Sun Summit Minerals Commences Fieldwork at
the Theory Project, Toodoggone District, BC
Cranbrook, B.C., August 21, 2025: (TSX-V:EPL) (OTCQB: EGPLF) (“EPL” or “Eagle Plains”) is
pleased to announce that partner Sun Summit Minerals Corp. (TSX -V: SMN; OTCQB: SMREF)
(“Sun Summit”) has mobilized exploration crews to commence 2025 fieldwork at Eagle Plains’ Theory
copper-gold project (the "Theory Project"), north-central British Columbia. 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.
The Theory Project borders Thesis Gold’s Ranch Project to the north and is located within 10 km to the
North West of Sun Summit’s JD Project. Sun Summit signed an option agreement with Eagle Plains to
earn up to a 100% interest in the project, located in the highly prospective Toodoggone Mining District .
(see press release dated March 17, 2025)
Theory Project Exploration Program
The focus of the 2025 program will be to identify drill targets using prospecting, geological mapping,
geochemical sampling and remote sensing to follow up on areas of interest generated through a 2024
airborne geophysical survey and a comprehensive, ongoing data compilation. The proposed work program
will have a budget adequate to exceed the minimum required 2025 exploration expenditures of $200,000.
Eagle Plains will serve as operator for the project and the work will be completed by TerraLogic
Exploration.
See Theory Project Information and Map here
The 9676ha Theory Project 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 Project.
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 Triangle
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 outc rop 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.
Recent e xploration success in the area has been highlighted by Thesis Gol d’s announcement 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) and by Amarc Resources’ new high -grade copper -gold-silver discovery at the
AuRORA zone of the Joy Project (Amarc Resources, January 17, 2025 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 Person
Technical information in this News Release has been reviewed and approved by C.C. Downie, P.Geo., a
director and officer of Eagle Plains, hereby identified as the “Qualified Person” under N.I. 43-101.
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 fourth -oldest listed issuer on the TSX-V (and the only one
of these four that has not seen a roll -back or restructuring of its shares). Eagle Plains has continued to
deliver shareholder value over the years and thr ough numerous 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 July 02,
2025, ER announced that it had entered into a definitive amalgamation agreement with Summit Royalty
Corp. pursuant to which Summit will “go -public” by way of a reverse takeover (RTO) of ER. Eagle
Royalties shareholders will receive a consideration of $0.18 per ER share, representing a premium of 47%
based on ER’s closing price on June 30, 2025 on the Canadian Securities Exchange. Completion of the
RTO is subject to a number of conditions, including, but not limited to, Exchange acceptance and required
shareholder approvals of ER and Summit. There can be no assurance that the RTO will be completed as
proposed or at all.
On October 2, 2024, Eagle Plains announced 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 2010-2024 on Eagle Plains-related projects exceed $39M, 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 of Eagle Plains
“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.