1911 Gold Intersects up to 24.83 g/t Gold over 2.60 m on San Antonio West at the True North Gold Project
Press Release
Vancouver, British Columbia, November 11, 2025 – 1911 Gold Corporation (“1911 Gold” or the “Company”) (TSXV: AUMB; OTCBB: AUMBF; FRA: 2KY) is pleased to announce new assay results from the surface drill program at the Company’s wholly-owned operational and fully permitted True North Gold Project (“True North”), centrally located within the Company’s 100%-owned Rice Lake Gold property, southeast Manitoba, Canada. The latest assay results are from five (5) drill holes for 1,867 metres (“m”) targeting the San Antonio West target (“SAM W”).
Drilling* Highlights:
- Surface drilling completed to date on the new SAM W target has confirmed quartz vein-hosted gold (“Au”) mineralization to a depth of 630 m below surface
- TN-25-064: Intersected 24.83 grams per tonne (“g/t”) Au over 2.60 m (at 490.00 m), including 46.00 g/t Au over 1.00 m, including 63.20 g/t Au over 0.50 m, 28.80 g/t Au over 0.50 m and 32.40 g/t Au over 0.50 m
- TN-25-067: Intersected 4.04 g/t Au over 5.80 m (at 467.60 m), including 23.90 g/t Au over 0.50 m and 6.12 g/t Au over 0.50 m
- TN-25-071: Intersected 12.80 g/t Au over 0.80 m (at 473.50 m)
- The drill holes targeting the SAM W down-dip extensions also intersected significant gold mineralization within an area defined as the Annex target (to the east and at shallower depths to SAM W), confirming historical gold mineralization defined in the area:
- TN-25-061: Intersected 10.00 g/t Au over 0.50 m (at 247.80 m) and 8.75 g/t Au over 2.60 m (at 294.00 m), including 18.00 g/t Au over 1.00 m
- TN-25-064: Intersected 2.94 g/t Au over 3.10 m (at 271.60 m), including 6.71 g/t Au over 1.00 m
- TN-25-067: Intersected 5.23 g/t Au over 2.50 m (at 272.50 m), including 5.76 g/t Au over 2.00 m and 9.18 g/t Au over 0.50 m
- TN-25-071: Intersected 6.73 g/t Au over 1.40 m (at 307.60 m), including 7.47 g/t Au over 0.90 m
* All drill results are quoted as downhole drill lengths, and downhole depth.
“San Antonio West continues to deliver some of the best near-mine exploration results we’ve seen at True North,” stated Shaun Heinrichs, President and CEO. “These high-grade intercepts demonstrate the strength of the True North mineralized system and highlights the continued opportunity to outline new zones of mineralization adjacent to existing infrastructure. With the transition to underground drilling, we will accelerate resource growth across multiple target areas building towards a sustainable restart of operations.”
1911 Gold has now completed seventy-five (75) surface drill holes, for a total of 20,398 m of drilling as part of the 2025 surface exploration drill program (the “2025 Surface Drill Program”). The 2025 Surface Drill Program focused on new targets defined by favourable host rocks and mineralized structural settings within the True North Mine footprint, also supported by significant historical drill intercepts that were close to surface and existing infrastructure. The most recent phase of the program consisted of two drill rigs targeting the down-dip extensions of mineralization at the new high-grade San Antonio Southeast (“SAM SE”) and SAM W target areas, as well as the newly identified Shore target. The surface drilling program was completed on September 20, 2025, and these are the last assay results being reported for the program. Project activities have now shifted to underground exploration, resource expansion and resource delineation drilling. Underground drilling within the True North Mine commenced on October 1, 2025, with one (1) drill rig on Level 16 (695 m below surface) and a second drill rig added on November 6, 2025.
Figure 1: Plan View-True North: Geology and SAM West and Annex Drill Holes Location Map
Figure 2: Cross Section (Looking NNW) AA’ SAM W and Annex Targets*
*Along the Cartwright South shear zone projected to vertical, San Antonio drifts and shafts projected up to 250 m from the south-east
**For other drill results see press release dated June 10, 2025 (1911 Gold intersects up to 58.66 g/t Gold over 1.40 m on San Antonio West Zone at True North); April 30, 2025 (1911 Gold intersects 62.40 g/t Au over 1.00 m on San Antonio West Zone at True North) and February 4, 2025 (1911 Gold intersects 8.42 g/t Gold over 0.91 m and 7.23 g/t Gold over 1.05 m in Drilling at True North).
| Table 1: Select Significant Drill Hole Assay Results | |||||
| Target Area (name) |
Drill Hole (number) |
From (m)To (m) |
Interval (m)Au (g/t) |
||
| Annex | TN-25-061 | 247.30 | 247.80 | 0.50 | 10.00 |
| 250.00 | 251.00 | 1.00 | 4.23 | ||
| 293.70 | 296.30 | 2.60 | 8.75 | ||
| Including | 295.30 | 296.30 | 1.00 | 18.00 | |
| Annex | TN-25-064 | 271.60 | 274.70 | 3.10 | 2.94 |
| Including | 273.70 | 274.70 | 1.00 | 6.71 | |
| SAM W | TN-25-064 | 490.00 | 492.60 | 2.60 | 24.83 |
| Including | 490.00 | 491.00 | 1.00 | 46.00 | |
| Including | 490.00 | 490.50 | 0.50 | 63.20 | |
| and | 490.50 | 491.00 | 0.50 | 28.80 | |
| and | 492.10 | 492.60 | 0.50 | 32.40 | |
| Annex | TN-25-067 | 272.50 | 275.00 | 2.50 | 5.23 |
| Including | 273.00 | 275.00 | 2.00 | 5.76 | |
| and | 274.50 | 275.00 | 0.50 | 9.18 | |
| SAM W | TN-25-067 | 467.60 | 473.40 | 5.80 | 4.04 |
| Including | 467.60 | 468.10 | 0.50 | 23.90 | |
| and | 472.90 | 473.40 | 0.50 | 6.12 | |
| 497.20 | 497.70 | 0.50 | 4.88 | ||
| Annex | TN-25-071 | 274.10 | 274.60 | 0.50 | 2.89 |
| 307.60 | 309.00 | 1.40 | 6.73 | ||
| Including | 307.60 | 308.50 | 0.90 | 7.47 | |
| 313.70 | 314.30 | 0.60 | 2.34 | ||
| 317.90 | 318.50 | 0.60 | 3.88 | ||
| 322.00 | 322.50 | 0.50 | 5.01 | ||
| SAM W | TN-25-071 | 473.50 | 474.30 | 0.80 | 12.80 |
- Intercepts above a cut-off grade of 2.25 g/t Au
- Maximum of 2.50 m internal dilution and no top capping applied
- Intervals represent drill core length and are considered to represent 60% to 90% of true widths
- Full Significant Assay Results included in Table 2
- Drill hole Information included in Table 3
San Antonio West Target: Discussion of Results
Drilling completed to date has confirmed the extensions of gold mineralization within the SAM gabbro to over 600 m northwest of the historically mined San Antonio zone, covering an area 400 m long and up to 630 m in depth. Twenty-six (26) surface drill holes, for a total of 6,087 m, were drilled on the SAM W target area as part of the 2025 program. The results of five (5) drill holes for 1,867 m are included in this press release, of which two (2) drill holes, TN-25-061 (311 m downhole depth) and TN-25-071A (30 m downhole depth), did not reach target depths and were abandoned due to hole deviation.
Drilling on the SAM W target confirmed the presence of a vein system parallel to the historical San Antonio ore body, which shares the same geology, alteration, and mineralization characteristics. The mineralized intercepts are characterized by quartz-carbonate shear veins and vein breccias with sericite, chlorite alteration and pyrite disseminated and in veinlets developed in association with east and northwest trending shear zone corridors.
Drill hole TN-25-064 tested the down-dip extensions of the modelled SAM W target area. Drilling successfully intercepted high-grade gold mineralization with the best intercept of 2.60 m @ 24.83 g/t Au (at 490.00 m downhole depth).
Drill hole TN-25-067 tested the 100 m down-dip extension of gold mineralization intersected in hole TN-25-058 (0.50 m @ 10.40 g/t Au), and intersected two distinct gold mineralized veins including 0.50 m @ 10.40 g/t Au, see press release dated June 10, 2025 (1911 Gold Intersects up to 58.66 g/t Au over 1.40 m on San Antonio West zone at True North).
Drill hole TN-25-71 was designed to test 100 m west of gold mineralization intersected in drill hole TN-25-060 (2.60 m @ 24.83 g/t Au), and intersected 0.80 m @ 12.80 g/t Au, see press release dated June 10, 2025 (1911 Gold Intersects up to 58.66 g/t Au over 1.40 m on San Antonio West zone at True North).
Annex Target: Discussion of Results
Drilling completed on the Annex target defined high-grade gold mineralization within a dacitic volcaniclastic unit. The gold mineralization is associated with well-developed quartz shear veins and vein breccias within a carbonate, sericite +/- chlorite alteration assemblage and disseminated and veinlet-hosted pyrite and occasionally specs of native gold.
Drill hole TN-25-061 intercepted 0.50 m @ 10.00 g/t Au (at 247.30 m downhole depth) and 2.60 m @ 8.75 g/t Au (at 293.70 m downhole depth), including 1.00 m @ 18.00 g/t Au (at 295.30 m downhole depth).
Drill hole TN-25-064 intercepted 3.10 m @ 2.94 g/t Au (at 271.60 m downhole depth), including 1.00 m @ 6.71 g/t Au (at 273.70 m downhole depth).
Drill hole TN-25-067 intercepted 2.50 m @ 5.23 g/t Au (at 272.50 m downhole depth), including 2.00 m @ 5.76 g/t Au (at 273.70 m downhole depth), and 0.50 m @ 9.18 g/t Au (at 274.50 m downhole depth).
Drill hole TN-25-071 intercepted 1.40 m @ 6.73 g/t Au (at 307.60 m downhole depth), including 0.90 m @ 7.47 g/t Au.
The high-grade nature and width of the drill intercepts and the preliminary size of the area drilled (120 m on strike and 160 m vertically and open up and down dip) represent an additional emerging target within the mine footprint. Upon modelling, this area could be further drilled from surface to define a potential new ore source in close proximity of the True North Mine infrastructure.
Figure 3: Long Section (Looking ENE)-BB’ SAM W Target
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