Transatlantic Obtains Permit for Additional Drilling, Dewatering at Golden Jubilee Project, Montana
Transatlantic Mining Corp. | Suite 400 | 837 West Hastings Street | Vancouver | Canada
V6C 3N6 T 604-630 7296 | F 604-357 1139| www.transatlanticminingcorp.com
Transatlantic Obtains Permit for Additional Drilling,
Dewatering at Golden Jubilee Project, Montana
Vancouver, B.C. September 08, 2025 - Transatlantic Mining Corp. (the “Company”)
(TCO:TSX.V) is pleased to announce the company has received its permit from the United
States Forrest Service for new drilling and dewatering at its Golden Jubilee project, located in
Granite County, Montana. The permit is approved to December 1, 2025.
Previous drilling by Transatlantic at the Golden Jubilee Mine announced on April 13, 2023,
consisted of 10 reverse circulation holes for a total of 2,000 metres (m). The results from this
drilling program confirm ed that the mineralized structure continues down dip and along
strike from mineralization which has either been mined previously or delineated by earlier
drilling.
The 2025 follow -up program will further test the down dip extension and plunge of the
main zone of mineralization.
It will also test a geophysical offset target that has not been drilled before. Additionally the
permit allows for Transatlantic to dewater the mine and survey it for further exploration
potential. The current plan envisages for Transatlantic to drill up to 1,000 metres in 2 to 4
holes to moderately shallow depths of 300 metres.
“After the last successful program in 2023, we’re excited to test further of the down dip and
plunge of this main zone of high-grade gold mineralization with the potential to add ounces
of gold to our envisioned deposit model,” said Bernie Sostak, CEO of Transatlantic. “There is
also the potential to test the geophysical offset as a discovery and additional parallel
mineralized zones at Golden Jubilee. This could have significant impact on the overall gold-
bearing potential and future gold endowment.”
Webinar:
Transatlantic CEO Bernie Sostak will host an interactive webinar discussing the company’s
exploration programs and future plans on Wednesday, September 10, 2025, at 9:00 am PT.
Register in advance for this meeting via the following link:
https://us02web.zoom.us/meeting/register/FcNRrdlhQbiWecgs8yyvmA
Transatlantic Mining Corp. | Suite 400 | 837 West Hastings Street | Vancouver | Canada
V6C 3N6 T 604-630 7296 | F 604-357 1139| www.transatlanticminingcorp.com
Highlights from the News Release - April 13, 2023 program:
• Drillhole # 2201 - 9.1 metres at 7.8 g/t Au from 64 metres depth (8.0 m true width)
(Including 1.5 metres at 16.11 g/t Au) 6.1 metres at 6.86 g/t Au from 86.9 metres depth
( 5.5 m true width)
• Drillhole # 2203 - 6.1 metres at 13.1 g/t Au from 111.3 metres depth (6.0 m true
width) (Including 3.0 metres at 17.3 g/t Au)
The following long section (Figure 1) illustrates the 2023 intersections juxtaposed
against existing drill results as well as the processing results from earlier mining
campaigns undertaken at the Golden Jubilee Mine.
Figure 1: Long Section looking Northwest on Golden Jubilee Structure
About Golden Jubilee
The 22 Golden Jubilee claims are situated in Granite County, Montana USA and have had a
number of previous owners. There has been only limited exploration and mining on the
regional Red Lion (vein) Line trend, which is known to continue over a regional strike of 7 km
in length. The Golden Jubilee Mine is located in mountainous country at an elevation of
approximately 2,350 m.
Transatlantic Mining Corp. | Suite 400 | 837 West Hastings Street | Vancouver | Canada
V6C 3N6 T 604-630 7296 | F 604-357 1139| www.transatlanticminingcorp.com
Historical Production
Although some mining occurred prior to the year 2000, there are limited production records
in existence.
Drillhole
Number
From
(m) To (m) Length (m)
Downhole
Length
(m)
True
Width
(m)
g/t Au Vein
GJB_RC_2201 64 73.2 9.1 9.1 8 7.78 New Vein
Includes 1.5 m at 16.11 g/t
Au
82.3 86.9 4.6 4.6 4.3 6.05 New Vein
86.9 93 6.1 6.1 5.5 6.86 New Vein
182.9 184.4 1.5 1.5 1.3 4.7 New Vein
219.5 221 1.5 1.5 1.3 6.51 New Vein
237.7 240.8 3 3 3 3.34 Golden Jubilee Vein
GJB_RC_2202 NSI No significant
Intersection
GJB_RC_2203 111.3 117.3 6.1 6.1 6 13.13 Golden Jubilee Vein
Includes 3 m at 17.3 g/t Au
GJB_RC_2204 NSI No significant
Intersection
GJB_RC_2205 VOID Not sampled, = Void
GJB_RC_2206 VOID Not sampled =Void
GJB_RC_2207 Not sampled
GJB_RC_2208 NSI Exploration Hole
GJB_RC_2209 NSI Exploration Hole
GJB_RC_2210 NSI Exploration Hole
Table 1: Golden Jubilee Drilling Results Long Section
Review by Qualified Person (Note Table 1 )
Aslam Awan PhD MAusIMM (CP Geo) is the Qualified Person pursuant to National Instrument
43-101 for having reviewed, only the technical information and approved as such contained
in this news release. Mr. Awan is the Principal for AAA GeoConsultants :
(*)The reverse circulation drill samples were crushed in whole to plus 70 % passing 2 mm
and then split and pulverised with analysis for gold and silver at the Christofferson
Laboratory, Smelterville, Idaho USA. The Laboratory is an independent assay and umpire
laboratory that follows industry techniques with blanks and standards inserted on batches
of 25. The samples being pulverised and analysed with a 15 to 30 gram fire assay charge and
a gravimetric finish. True widths were estimated based on the dip cross section width of the
Transatlantic Mining Corp. | Suite 400 | 837 West Hastings Street | Vancouver | Canada
V6C 3N6 T 604-630 7296 | F 604-357 1139| www.transatlanticminingcorp.com
mineralisation at 1.0 g/t Au cutoff ( Table 1). Additional historical holes drilled and assayed
are also on Figure 1. The Company also adds a standard to determine any assay bias.
About Transatlantic Mining Corp.
Transatlantic Mining (TSX -V: TCO) is an emerging precious and base metal explorer. The
Company has a focus on converting projects into mines within stable mining jurisdictions.
The Company currently holds property interests including an 80% Joint Venture position on
the Monitor Copper -Gold project in Montana -Idaho (USA) and 100% of the Golden Jubilee
Gold Project with its associated mining rights. The Company also has an extended lease, right
to mine, and purchase arrangement for the Miller Gold Mine in Mon tana, moving towards
100% ownership by way of a payment royalty.
Cautionary Statement Regarding Forward-Looking Statements
This news release contains "forward -looking statements" within the meaning of Canadian
securities legislation. These forward -looking statements include, but are not limited to,
statements regarding the Company's future exploration plans, geophysical progra ms, and
the potential for mineralization. Forward -looking statements are subject to known and
unknown risks, uncertainties, and other factors that may cause the actual results, level of
activity, performance, or achievements of the Company to be materially different from those
expressed or implied by such forward-looking statements. These factors include, but are not
limited to, risks associated with the exploration and development of mineral properties, the
Company's ability to obtain necessary permits, and the availability of financing. Readers are
cautioned not to place undue reliance on forward -looking statements. The Company
undertakes no obligation to update or revise any forward -looking statements, except as
required by law.
For further information, please contact: Bernie Sostak:
[email protected] , +61 (0) 439 904 044,
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.