AUMB.V · 2025-11-11 12:00:00

1911 Gold Intersects up to 24.83 g/t Gold over 2.60 m on San Antonio West at the True North Gold Project

Drill Results

1911 Gold Intersects up to 24.83 g/t Gold over 2.60 m on San Antonio

West at the True North Gold Project

Vancouver, British Columbia , November 11 , 202 5 – 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

o 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

o 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

o 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:

o 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

o 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

o 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

o 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

* 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 build ing 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)

Interval

(m)

(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

1) Intercepts above a cut-off grade of 2.25 g/t Au

2) Maximum of 2.50 m internal dilution and no top capping applied

3) Intervals represent drill core length and are considered to represent 60% to 90% of true widths

4) Full Significant Assay Results included in Table 2

5) 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

San Antonio West Target

The SAM W target is located west of the historically mined San Antonio zone within the True North Mine.

The SAM W target occurs within the gabbro of the San Antonio mafic unit and the intersection with the

Cartwright South mineralized shear zone. The SAM gabbro hosts the majority of the known gold

mineralization within the True North Mine and historically produced 1, 309,351 ounces Au at an average

grade of 9.33 g/t Au from San Antonio (see technical report entitled “NI 43-101 Technical Report on the

True North Gold Project, Bissett, Manitoba, Canada, dated December 23. 2024).

Annex Target

The Annex target is located 300 m east of the Cartwright Zone and 1 kilometre (“km”) northwest of the

Hinge deposit, and was first intersected in a 2012 and 2013 surface exploration drilling program. The target

is located at the intersection of the Cartwright South shear zone with a dacitic volcanoclastic unit, potentially

the northwest extension of the host unit of the Hinge deposit, and covers an area with a 120 m east-west

strike length by 160 m vertically, and is open both along strike and at depth. Additional interpretation is

ongoing to model the extent of the mineralized zone to assess up-side potential.

Figure 4: Long Section (Looking ENE)-Expanded view from BB’ of SAM W with drill intercepts

*Historic drill holes referenced on Table 4 and 5 below

Figure 5: Isometric view (Looking NNE)-SAM W target area with high-grade gold intercepts

Next Steps

With the latest phase of surface drilling within the mine lease completed in late September, the Company

has shifted its focus to an expanded underground drill campaign within the True North Mine footprint. Two

(2) underground drill rigs are currently active on Level 16, an area that provides multiple favourable drill

stations and immediate access to high-priority targets. Underground drilling is designed to continue testing

the down-dip extensions of the SAM W, SAM SE and Shore discoveries, as well as evaluating several

newly defined exploration targets (see press release dated September 25, 2025). The program will also

include delineation drilling of two test mining areas accessible from Level 16 and drill testing the extensions

of the current resource.

Rehabilitation work will also commence in two key areas over the coming months: the L13 deposit area,

accessed by a ramp from the Hinge decline, and Level 6, a previously unsurveyed level located 262 m

below surface, extending northwest from the A Shaft of the historical San Antonio workings. The L13 area

will provide improved access to drill the down-dip extensions of the SAM SE target, while rehabilitation on

Level 6 will support continued drilling of the SAM W target and potential drilling of the Cartwright Zone to

the west, an area hosting a mineral resource open-at-depth. Additional surface drilling is currently being

planned to continue testing the SAM W and Shore targets over the winter.

Concurrently, the Company is advancing permitting for a 2,200 m surface drill program at Ogama-Rockland,

a near-surface target with a high-grade NI 43-101 mineral resource, located 35 km southeast of the True

North complex (see Technical Report dated November 15, 2013, “A Technical Review of the Ogama-

Rockland Deposit on the Rice Lake Property, Manitoba, Canada,” prepared by Watts, Griffis and McOuat).

The Company expects to receive approval to commence drilling in the coming weeks, which would allow

the program to begin before year-end.

*Composites above 0.5 g/t Au and metal factor above 0.5 Au “gxm”

Table 2: True North; Select Drill Hole Assays

Target

Area

(name)

Drill Hole

(number)

From

(m)

Interval

(m)

(g/t)

Annex TN-25-061 247.30 247.80 0.50 10.00

249.00 250.00 1.00 0.59

250.00 251.00 1.00 4.23

251.00 253.60 2.60 1.84

261.60 262.20 0.60 0.55

288.70 289.20 0.50 1.35

293.70 296.30 2.60 8.75

Including 295.30 296.30 1.00 18.00

297.00 297.50 0.50 0.51

300.20 300.70 0.50 0.71

301.90 303.00 1.10 0.65

Annex TN-25-064 260.30 264.00 3.70 1.02

271.60 274.70 3.10 2.94

Including 273.70 274.70 1.00 6.71

311.30 312.40 1.10 0.66

315.50 317.30 1.80 0.96

483.90 485.90 2.00 1.08

487.00 488.00 1.00 1.93

SAM West 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

492.60 496.50 3.90 0.64

Annex TN-25-067 272.50 275.00 2.50 5.23

Including 273.00 275.00 2.00 5.76

Including 273.00 273.50 0.50 6.43

and 273.50 274.00 0.50 6.79

and 274.50 275.00 0.50 9.18

275.50 276.00 0.50 1.19

285.10 286.60 1.50 2.01

446.60 447.50 0.90 0.62

SAM West 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

474.30 474.80 0.50 0.59

481.90 484.50 2.60 0.81

497.20 497.70 0.50 4.88

265.10 265.60 0.50 1.03

Annex TN-25-071 274.10 274.60 0.50 2.89

277.70 279.00 1.30 0.63

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

318.50 319.90 1.40 1.42

322.00 322.50 0.50 5.01

322.50 323.60 1.10 1.17

328.30 328.80 0.50 1.93

406.30 407.00 0.70 0.54

466.50 467.40 0.90 2.24

469.10 470.10 1.00 0.51

473.00 473.50 0.50 0.59

SAM West TN-25-071 473.50 474.30 0.80 12.80

475.30 476.80 1.50 0.77

Table 3: True North Drill Hole Details (UTM NAD83 Zone 15)

Drill Hole

(Number)

Target

(Name)

Northing*

(m)

Easting*

(m)

Elevation

(masl)

Azimuth

(°)

Inclination

(°)

Depth

(m)

TN-25-061 SAM West 5656302 312170 266 243 -56 311

TN-25-064 SAM West 5656307 312180 266 229 -71 509

TN-25-067 SAM West 5656308 312182 266 206 -58 516

TN-25-071A SAM West 5656309 312179 266 249 -62 30

TN-25-071 SAM West 5656309 312180 266 249 -62 501

Table 4: Historic Drill Hole Details (UTM NAD83 Zone 15)

Drill Hole

(Number)

Northing*

(m)

Easting*

(m)

Elevation

(masl)

Azimuth

(°)

Inclination

(°)

Depth

(m)

CW-06-064 311685 5656239 261 172 -60 310

CW-06-069 311630 5655977 259 158 -50 182

CW-06-071 311630 5655977 259 167 -70 200

CW-06-073 311630 5655977 259 101 -50 215

GAB-28-014 311611 5655937 258 220 -45 20

GAB-36-005 311620 5655955 258 220 -60 53

GAB-60-012 311631 5655918 258 220 -65 65

GAB-6-010 311585 5655955 258 220 -50 66

GAB-7-007 311543 5656062 258 220 -50 115

UR-12-005 312153 5656301 266 240 -55 520

Table 5: Historic Drill Holes - Select Significant Drill Hole Assay Results*

Drill Hole

(number)

From

(m)

Compos

ite

Interval

(m)

(g/t)

CW-06-064 282.61 283.92 1.31 6.86

CW-06-069 73.67 77.05 3.38 7.93

CW-06-071 72.54 74.16 1.62 3.54

CW-06-073 192.33 194.28 1.95 4.05

GAB-6-010 10.67 11.46 0.79 10.97

GAB-7-007 104.55 105.55 1.01 28.11

GAB-28-014 16.46 18.20 1.74 6.54

GAB-36-005 46.33 49.41 3.08 9.80

GAB-60-012 45.35 46.33 0.98 8.91

UR-12-005 456.65 458.18 1.52 2.72

CW-06-064 282.61 283.92 1.31 6.86

* Refer to Technical Report dated December 23, 2024 entitled “NI 43-101 Technical Report on the True North Gold Project, Bissett,

Manitoba, Canada”

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