Transatlantic Provides Update on Drilling at the Historic Miller Gold Mine, Montana
Transatlantic Provides Update on Drilling at the Historic Miller
Gold Mine, Montana
VANCOUVER, B.C., August 27, 2025 – Transatlantic Mining Corp. (the “Company”) (TCO:TSX.V) is
pleased to provide an update on drilling at the historic Miller Mine in Montana
On December 21st 2020 Transatlantic exercised its initial option term to acquire 100% of the Miller
Mine located in the Broadwater County in the State of Montana , USA. These claims are
approximately 29 miles to the northeast of Townsend in Montana USA with gold mineralization that
has been verified on the old levels of the historic Miller mine predominantly mined between 1900
and the 1940 s.
Transatlantic is drilling down dip of the historic lower levels to over 100 metres of strike and depth
on the principal vein structure as well as exploration along strike north and south. Transatlantic has
completed 2,069 metres (m) in 25 holes of a 3,000 m planned program in phase 1 campaign.
The hole depth range is from 10 m to 207 m. Phase 1 comprises of a total of 25 holes. (Hole # 14
:Figure 2). Of the 25 holes completed, 8 have been drilled deeper under the existing workings in the
upper target area (Figure 1), 10 have explored extension to the north and south and 7 shallow holes
have tested an old mine dump. The main target and focus is the vein/s on the contact of the
sediment and granodiorite.
Samples from the first 17 holes have recently been submitted to the Laboratory with assays and
results projected to be completed end of August early September.
In concert with the surface drilling phase 1, we are now mobilising an underground drill rig today for
testing the lower target area ( Figure 1).
The target is being well intersected on the sediment granodiorite contact to date, ” said Transatlantic
CEO Bernie Sostak. “We are getting near the end of the phase 1 drilling campaign, and are looking
forward to sharing the results with investors. ”
Figure 1 - Miller Mine Resource Drilling Target Areas
Webinar Recording: CEO Bernie Sostak hosts an interactive webinar discussing the company’s
drill program and future plans at Miller: Click HERE to view.
Fig 2. Drill Rig on Hole 14 at the Miller Mine in Montana, with stockpile in background
The Miller Gold Mine is located in the Broadwater County in the State of Montana, USA. The mine is
approximately 29 miles northeast of Townsend in Montana USA. The presence of gold
mineralization has been confirmed by previous sampling in areas of the mine where access is
possible. Transatlantic is earning into the historic Miller Gold Property by means of a gold
production royalty near Helena, Montana.
A historical Report (*) on the Miller Mine notes that historically, gold bearing ore was mined on a
small scale by individual owners with sporadic production between 1901 and 1948. The mine is
being re accessed by Transatlantic to review existing ground conditions and infrastructure for
ongoing rehabilitation.
Located at the top end of the Confederate Gulch near what is now a ghost town in Diamond City, of
which once had a population of + 10,000. Placer gold was abundant and rich in this Gulch.
• Miller had an average recovered mine grade of 7.94 Oz /ton Au (248 g/t Au ) and 4.65 Oz /ton
Ag ( 145 g/t Ag)(*)
• Hole #1 was drilled 300 feet below the lowest recorded workings and recorded 14.7 Oz /ton
Au (516 g/t Au)
The Miller Mine mineralization occurs in quartz veins within and on the contact of a quartz
granodiorite stockwork. The discrete veins dip between 30 and 80 degrees whilst the stockwork has
multiple veinlets that range in width from a few cms to 2 metres. The contact zone of alteration has
been noted as over 15 m wide ( 50 feet ). Mining has been undertaken on both an open cut and
underground methodology. The mine is at an elevation of 2000 m ( 6650 feet)
Highlights of previous sampling ( see news release dated June 14, 2023)
Miller Mine -Lower Level
• Opened up Lower Winze Level immediately below the Lower Level.
• First grab samples from Lower Level Winze include 27. 6 g/t Au(**), visual gold has also
been observed.
• Extended Lease Agreement to first renewal term with option to purchase by production
royalty.
About the Miller Mine and Claim Group:
Transatlantic has access to the Upper and Lower Level of the mine. The Miller Mine is situated
amongst patented and unpatented claims at an elevation of 1920 m (6,400 feet) and accessible by
roads 50 miles from Helena, Montana USA. Should mining occur at any time, an 8.5 % royalty on
ounces is to be paid. During the term of the agreement, the Company may purchase the property
for US $4,500,000, less the royalty payments made above, with a perpetual 1 % NSR to the vendor
thereafter.
The gold and silver mineralization generally occurs on the contacts of sediments and igneous
intrusive with native gold and sulphides including pyrite often observed amongst the 4 known adits
located on the property.
Qualified Person and NI 43-101 Disclosure
Aslam Awan PhD MAusIMM (CP Geo) is the Qualified Person pursuant to National Instrument 43-
101 for having reviewed, only the technical information contained in this news release. Mr. Awan is
the Principal for AAA Geo Consultants and is Independent of the Company.
Rock Chip Samples may not reflect the average grade of mineralisation
QA/QC and Core Sampling Protocols
(**)The rock chip samples are grabs from the winze level drive of 5 kg in weight. The 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. The samples after
being pulverised are analysed with a 15 to 30 gram fire assay charge and gravimetrically finished.
(*) Hemsworth FJ: Report on the Miller Mine Helena Montana ( July 2 1969)
(**) Company News Release dated June 14, 2023
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 has 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 has an extended lease, right to mine and purchase
arrangement for the Miller Gold Mine in Montana to 100% ownership by way of payment royalty.
ON BEHALF OF THE BOARD OF DIRECTORS
“ Bernie Sostak”
For more information contact
604-614-8469
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