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Great Atlantic Discovers New Gold - Copper Zone at 100% Owned Golden Promise Property Central Newfoundland

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Great Atlantic Discovers New Gold - Copper

Zone at 100% Owned Golden Promise Property

Central Newfoundland

Vancouver, British Columbia--(Newsfile Corp. - September 10, 2026) -

GREAT ATLANTIC

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

is pleased to announce its

wholly-owned subsidiary, Golden Promise Mines Inc. ("Golden Promise Mines"), has received analyses

for some rock samples collected during 2025 at the Company's 100% owned Golden Promise Property,

central Newfoundland.

The results further confirm gold and copper mineralization in bedrock

within a narrow zone in the southwest region of the property. The mineralized zone was initially

discovered during a 2024 trenching program.

Recently discovered Gold - Copper Zone at Golden Promise (Southwest Region)

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

https://images.newsfilecorp.com/files/3027/313722_d0de676dc4a85b83_002full.jpg

Excavator trenching by Golden Promise Mines during 2024 exposed a narrow sulfide being zone

(including pyrite and chalcopyrite) with quartz veining and exhibiting silicification and shearing. The zone

was exposed in the northern part of the eastern - most trench.

The initial 2024 rock grab sample

(sample no. 309469) from this zone returned 481 parts per billion (ppb) gold (0.481 grams / tonne

(g/t) Au) while returning greater than 10,000 parts per million (ppm) for copper (>1% Cu) and

returning greater than 6 ppm silver

(see Company news releases of February 12, 2025; and

September 4, 2025). The zone is up to 0.4 meters wide in the bedrock exposure, trends northeast -

southwest and is subvertical. The trench was subsequently backfilled although the bedrock exposure with

the gold and copper bearing zone extends to surface and was left exposed.

Three additional bedrock grab samples were collected from the gold and copper bearing zone during

2025. These samples were collected along an approximately 4 meters long section of the zone. The

samples confirmed copper and gold mineralization with +/- anomalous silver. The three 2025 bedrock

grab samples returned:

36105-25-16:

1,008 ppb gold (1.008 g/t Au) and 155 ppm copper

36105-25-47:

807 ppb gold (0.807 g/t Au), >10,000 ppm copper (>1% Cu) & >6 ppm silver

36105-25-48:

443 ppb gold (0.443 g/t Au) and 680 ppm copper

A 2025 sample (36105-25-49) from a piece of subcrop on top of the same bedrock exposure

returned an anomalous gold value of 370 ppb (0.370 g/t gold).

Figure 1: Golden Promise Property with Gold Occurrences

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

https://images.newsfilecorp.com/files/3027/313722_d0de676dc4a85b83_003full.jpg

The gold and copper bearing zone discussed in this news release has not been traced along its

projected strike. Management of Golden Promise Mines are planning work within the area of this

mineralized zone including geophysical surveys and additional trenching.

The Golden Promise Property hosts gold bearing quartz veins in various regions of the property,

including the Jaclyn Zone quartz vein systems, Shawn's Shot quartz vein, Otter Brook occurrence, Linda /

Snow White quartz vein system and the Gabbro Zone occurrence. The property is located within the

Exploits Subzone of the Newfoundland Dunnage Zone.

It is located approximately 50 kilometers

northeast of the Valentine Gold Mine of Equinox Gold Corp.

(

TSX: EQX, NYSE: EQX) which is

also located within the Exploits Subzone.

The Golden Promise Property is the largest and most

advanced of seven central Newfoundland gold properties owned by Golden Promise Mines.

One of

these properties (Golden Trust) is located within one kilometer of the Valentine Gold Mine of

Equinox Gold Corp.

Readers are warned that mineralization at the Valentine Gold Mine is not

necessarily indicative of mineralization at the Golden Promise Property or any of the other central

Newfoundland gold properties of Golden Promise Mines.

Golden Promise & Golden Trust Properties within the Central Newfoundland Gold Belt

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

https://images.newsfilecorp.com/files/3027/313722_d0de676dc4a85b83_004full.jpg

The 2024 and 2025 rock samples discussed in this news release were analyzed by Eastern Analytical

Ltd., a certified laboratory independent of Golden Promise Mines and Great Atlantic. Sample 309469

was analyzed for gold by the Total Pulp Metallics method. This involved crushing the sample to -10 mesh

and pulverizing to 95% -150mesh. The sample was then weighed and screened 150mesh. The

+150mesh fraction was fire assayed for gold (148 ppb Au) and a 30-gram subsample of the -150mesh

fraction was fire assayed for gold (482 ppb Au). A calculated weighted average of total gold was also

reported (481 ppb Au). The four 2025 rock samples discussed in this news release were analyzed for

gold by fire assay - AA (30-gram subsamples from -150mesh pulverized fractions). These 2024 and

2025 samples were also analyzed for 34 elements (including silver and copper). This involved total

dissolving of 200mg subsamples from the pulverized fractions and analysis by ICP-OES. The upper

analytical limit was 10,000 ppm for copper and 6 ppm for silver. Golden Promise Mines plans to re-

submit sample nos. 309469 and 36105-25-47 for copper and silver assay.

Readers are warned that pre-2017 historic results stated in Figure 1 have not been verified by Great

Atlantic or Golden Promise Mines.

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, reviewed and 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/3027/313722_d0de676dc4a85b83_005full.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/3027/313722_d0de676dc4a85b83_006full.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/313722