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Great Atlantic Begins New and Additional Sampling of Drill Core - Previous Samples Included 1,158 g/t Silver, 9.04% Zinc, and 9.19% Copper over 3 Meters at Its 100% Owned Keymet Precious Metal - Base Metal Property, Northeast New Brunswick

Drill Results Exploration Programs

Great Atlantic Begins New and Additional

Sampling of Drill Core - Previous Samples

Included 1,158 g/t Silver, 9.04% Zinc, and

9.19% Copper over 3 Meters at Its 100% Owned

Keymet Precious Metal - Base Metal Property,

Northeast New Brunswick

Vancouver, British Columbia--(Newsfile Corp. - October 31, 2025) -

GREAT ATLANTIC RESOURCES

CORP. (TSXV: GR) (the "Company" or "Great Atlantic")

is pleased to announce it has begun a

program of additional sampling of drill core from the 2021 diamond drilling program at its 100% owned

Keymet Precious Metal - Base Metal Property, located in northeast New Brunswick.

Massive Sulfides in Drill Hole Ky-18-14: 9.04% zinc, 9.19% copper and 1,158 g/t silver

(3.00 meters core length)

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/3027/272663_3020333eb490eb7c_002full.jpg

The 2021 diamond drilling program was conducted in the area of the Elmtree 12 polymetallic

vein system (northwest of the historic Keymet Mine), which hosts high grade silver, zinc and

copper. Gold mineralization also occurs locally in this area associated with arsenopyrite.

The core sampling will include intervals with arsenopyrite mineralization for gold analysis and intervals

with base metal sulfide mineralization for base metal and silver analysis.

The Elmtree 12 vein system

includes local high-grade veins, including a 2018 drill intercept (hole Ky-18-14) of 1,158 grams /

tonne (g/t) silver, 9.04% zinc and 9.19% copper over 3.00 meters core length.

The 2021 drilling program, conducted within the northwest region of the Keymet Property, consisted of

ten holes (2,661 total meters) testing numerous targets northwest of the historic Keymet Base Metal -

Silver Mine. The 2021 drilling program, as with the 2015, 2017 and 2018 drilling programs (see

Company news releases for results of 2015, 207 and 2018 drilling programs), targeted the area of the

Elmtree 12 polymetallic vein system and nearby target areas.

Twenty-two core samples from the first five 2021 drill holes (Ky-21-23 to Ky-21-27) were analysed during

early 2022 with intercepts (core length) including (see Company News Release of April 20

th

, 2022):

Ky-21-25: 31.60 - 32.23 meters (0.63m): 1.53 g/t gold and 74.25 - 74.95 meters (0.70m): 3.17

g/t gold

Ky-21-27: 102.64 - 103.56 meters (0.92): 3.50% zinc, 3.26% lead, 0.36% copper and 48.8 g/t

silver

The gold bearing intercepts of hole Ky-21-25 represent a new gold discovery for the Company referred

to as the Debler Zone. Both gold bearing intercepts in this hole contain arsenopyrite mineralization. Hole

Ky-21-27 tested the southern part of the Elmtree 12 vein polymetallic vein system.

Ky-21-25 (Debler Zone): 3.17 g/t Au over 0.70 meters (core length)

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/3027/272663_3020333eb490eb7c_003full.jpg

Previous sampling and analysis of the 2021 drill core was very limited with only 22 drill core samples

being submitted for analysis during 2022.

Intervals of unsampled 2021 drill core have been selected

for additional sampling / analysis. One objective of this drill core sampling program is to analyze

intervals with arsenopyrite for gold. Another objective is to analyze veins / veined zones with

base metal sulfides for base metals and silver (such samples will also be analyzed for gold and

a wide range of metals).

Semi-massive sulfides in veins within hole Ky-21-28 (unsampled)

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/3027/272663_3020333eb490eb7c_004full.jpg

For example, the interval in hole Ky-21-23 at 175.21-175.96 meters contains a veined zone with

semi-massive sphalerite and galena that has not been sampled / analyzed. This hole was drilled

in the area of a historic shaft.

This and similar vein intervals in 2021 drill core will be sampled during

the current program.

Intervals with arsenopyrite mineralization in hole Ky-21-27 have been selected for sampling.

This hole, drilled at the Elmtree 12 polymetallic vein system, intersected intermittent

arsenopyrite between 29.8 meters and 90.1 meters.

Company representatives are closely re-

examining 2021 drill core for other intervals of arsenopyrite mineralization for sampling.

Drilling Program Map - Keymet Property

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/3027/272663_3020333eb490eb7c_005full.jpg

The Keymet Property hosts the historic Keymet Base Metal - Silver Mine which operated briefly during

the 1950s. The mine burnt in the mid 1950s and was never recapitalized. The Keymet Property is

located approximately four kilometers north of the historic Nigadoo Mine. The Nigadoo Mine operated

during the 1960s and 1970s producing copper, lead, zinc and silver.

Historic Keymet Base Metal - Silver Mine (1950s) - burnt down and was never recapitalized

Located 8KM away from the historic Nigadoo Mine that operated for over twenty years

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/3027/272663_3020333eb490eb7c_006full.jpg

Keymet Property Map

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/3027/272663_3020333eb490eb7c_007full.jpg

The Keymet Property, located northwest of Bathurst, covers an area of approximately 3,340 hectares

and is 100% owned by the Company.

David Martin, P.Geo., (New Brunswick and Newfoundland and Labrador), a Qualified Person as defined

by NI 43-101 and VP Exploration for Great Atlantic, approved the technical information contained in this

News Release.

On Behalf of the board of directors

"Christopher R. Anderson"

Mr. Christopher R. Anderson

President CEO Director

604-488-3900

Investor Relations:

1-416-628-1560

[email protected]

___

Never miss an update!

Follow Great Atlantic Resources Corp. on social media for project updates, photos, and much more.

LINKEDIN:

https://ca.linkedin.com/company/greatatlanticresources

X:

https://x.com/GreatAtlRes

FACEBOOK:

https://www.facebook.com/GreatAtlanticResources

INSTAGRAM:

https://www.instagram.com/greatatlanticresources/

YOUTUBE

:

https://www.youtube.com/@GreatAtlanticTV/

TIKTOK:

https://www.tiktok.com/@greatatlanticresources

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/3027/272663_3020333eb490eb7c_008full.jpg

About Great Atlantic Resources Corp.:

Great Atlantic Resources Corp. is a Canadian exploration

company focused on the discovery and development of mineral assets in the resource-rich and

sovereign risk-free realm of Atlantic Canada, one of the number one mining regions of the world.

Great Atlantic is currently surging forward building the company utilizing a Project Generation model,

with a special focus on the most critical elements on the planet that are prominent in Atlantic Canada,

Gold, Copper, Zinc, Nickel, Cobalt, Antimony and Tungsten.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/3027/272663_3020333eb490eb7c_009full.jpg

This press release includes certain statements that may be deemed "forward-looking statements". All

statements in this release, other than statements of historical facts, that address future exploration

drilling, exploration activities and events or developments that the Company expects, are forward looking

statements. Although the Company believes the expectations expressed in such forward-looking

statements are based on reasonable assumptions, such statements are not guarantees of future

performance and actual results or developments may differ materially from those in forward-looking

statements. Factors that could cause actual results to differ materially from those in forward-looking

statements include exploitation and exploration successes, continued availability of financing, and

general economic, market or business conditions.

Neither 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.

Great Atlantic Resource Corp.

888 Dunsmuir Street - Suite 888, Vancouver, B.C., V6C 3K4

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/272663