Transatlantic Mining drills 1.5 m of 6 g/t Au at Miller

Executive Summary

• Transatlantic Mining Corp. released assay results from its Phase 1 drill program at the historic Miller Gold Mine in Montana, confirming mineralization at the granodiorite/metasediment contact and extending known mineralization along strike.
• Significant intercepts include 1.5 meters at 6.0 g/t Au and 13.71 g/t Ag in hole MMRC_2514, and a surface sample from the drill sump returning 0.5 meters at 370 g/t Au and 270 g/t Ag.
• The Phase 1 campaign consisted of 25 holes totaling 2,070 meters, with future underground drilling postponed to 2026 due to permit expiration, and drilling at the Golden Jubilee project postponed due to weather.

Key Details

• Drill Program Scope: Phase 1 comprised 25 reverse circulation (RC) holes totaling 2,070 meters. Hole depths ranged from 10 to 160 meters.
  • 8 holes drilled under existing workings in the upper target area.
  • 10 holes explored extensions to the north and south.
  • 7 shallow holes tested an old mine waste dump.
• Significant Intercepts (Surface RC Drilling):
  • Hole MMRC_2514: 1.5 meters at 6.0 g/t Au and 13.71 g/t Ag. Located 150 meters south of existing workings.
  • Hole MMRC_2504: 1.5 meters at 5.76 g/t Au, 21.94 g/t Ag, and 150 meters to the north of existing workings.
  • Surface Sample (Drill Sump): Sample No. 2021543552 returned 0.5 meters true width at 370 g/t Au and 270 g/t Ag.
  • Hole MMRC_2518: Returned 1.5 meters at 5.49 g/t Au from the waste dump (to be reviewed further in 2026).
• Geological Findings:
  • Drilling confirmed the granodiorite/metasediment contact exists along strike and down dip.
  • The contact has now been intersected over a strike of 500 meters.
  • Mineralization was found at or close to rock contacts; a high "nugget effect" is noted, suggesting historical grades may be higher than drilling intercepts.
  • Holes MMRC2511, 2515-2522, 2524, and 2525 returned no significant intercepts.
• Project Updates & Schedule:
  • Miller Mine: Planned underground drilling (lower target) has been moved to 2026 as the 2025 permit expired. An extension application has been submitted.
  • Golden Jubilee Project: Drilling postponed due to winter weather and the termination of the interim permit on Dec 1, 2025. An extension will be sought for 2026.
  • Monitor Project (Anvil Prospect): Company is awaiting results from a muon geophysical trial.
• Historical Context:
  • Miller mine had an average recovered grade of 7.94 oz/ton Au (248 g/t) and 4.65 oz/ton Ag (145 g/t).
  • Historical Hole No. 1 recorded 14.7 oz/ton Au (516 g/t) 300 feet below the lowest recorded workings.
• Royalty Terms:
  • 8.5% royalty on ounces is payable if mining occurs.
  • Company has the option to purchase the property for $4.5 million (less royalty payments), subject to a perpetual 1% NSR thereafter.

Notable Quotes

• "The drilling confirms the contact of the granodiorite and metasediments exists along strike and down dip," said Transatlantic chief executive officer Bernie Sostak. "This maiden drill program also uncovered vein and contact extension to the south and north of the existing mine workings. The deposit remains open along strike and at depth resulting in future drill target programs."