Yukon Metals Corp press release

Goliath Intersects Several High-Grade Gold Holes Including 8.45 g/t Au Over 7.13 Meters, Within 5.13 g/t Au Over 12.00 Meters, Drilling Maintains 100% Hit Rate, Surebet Discovery Remains Open, Golddigger Property, Golden Triangle, B.C.

2025-09-22

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Visible gold to the naked eye “VG-NE” heat map of all holes reported to date 2021 – 2025 (see below). An accompanying infographic is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/0a12f8b1-aa01-49b0-85d4-7fdb8b347dbf

Since drilling started in 2021, many holes have returned impressive metal factors with 9 holes delivering greater than 200 grams*meters (“g*m”) and up to 1346 g*m, 11 holes greater than 150 g*m, 25 holes greater than 100 g*m, 32 holes greater than 75 g*m and 63 holes greater than 50 g*m have been drilled on the Surebet Discovery that remains wide open.

Drill hole GD-25-365 intersected 8.45 g/t Au over 7.13 meters, within 5.13 g/t Au over 12.00 meters, including 17.20 g/t Au over 3.35 meters. From an interval containing multiple occurrences of visible gold (VG-NE) within a zone of strong quartz-sulphide veining hosted in the andesite unit belonging to the Bonanza Zone that remains wide open. The intercept is approximately true width, and these assays reflect gold only (AuEq value in the interval will be adjusted accordingly once Ag, Cu, Pb and Zn are received). An accompanying infographic is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/e4d6ed8f-9e7d-486f-9d8c-0f06fa3fb8ed

GD-25-365 is currently modeled in the NW extension of the Bonanza Zone that also corresponds to previously announced holes GD-22-96, GD-24-245, GD-24-263 and GD-24-273 that respectively assayed 4.92 g/t Au over 3.7 meters, 4.14 g/t Au over 8 meters, 8.37 g/t Au over 6 meters, and 4.62 g/t Au over 8.9 meters (see cross section, plan view and 3D vein wire frame below).

An accompanying infographic is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/587eccbd-9e95-42ce-a6e9-3e4e08b4914a An accompanying infographic is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/39bbdd5a-ffb8-46f8-9485-2bdcba8e105c An accompanying infographic is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/ef17364c-0093-475f-9462-64ae46e93c67

Drill hole GD-25-360 intersected 6.47 g/t Au over 4.00 meters, within 2.66 g/t Au over 11.10 meters, part of a quart-sulphide breccia corresponding to the Bonanza Zone that remains wide open. The intercept is approximately true width, and these assays reflect gold only (AuEq value in the interval will be adjusted accordingly once Ag, Cu, Pb and Zn are received).

An accompanying infographic is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/d363cc83-9f8e-4eba-b1af-60f2a143cdc9

Drill hole GD-25-358 intersected two separate intervals that both correspond to the Bonanza Zone which remains wide open. The first 6.09 g/t Au over 5.00 meters, including 10.13 g/t Au over 3.00 meters, containing VG-NE associated with semi-massive to massive sulphides. The second interval assayed 6.33 g/t Au over 4.10 meters, within 3.90 g/t Au over 7.00 meters and within a larger interval of 2.33 g/t Au over 12.00 meters, where VG-NE occurs in close association with bismuth within quartz-chlorite veins. The intercept is approximately true width, and these assays reflect gold only (AuEq value in the interval will be adjusted accordingly once Ag, Cu, Pb and Zn are received).

Drill hole GD-25-359 intersected 6.38 g/t Au over 3.00 meters, within 5.09 g/t Au over 3.97 meters from a zone of strong quartz-sulphide stockwork and breccia, with multiple occurrences of VG-NE corresponding to the Surebet Zone, that remains wide open. The intercept is approximately true width, and these assays reflect gold only (AuEq value in the interval will be adjusted accordingly once Ag, Cu, Pb and Zn are received). An accompanying infographic is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/38cd7b02-6577-4ca0-8896-3248203ed0f5

Drill hole GD-25-354 intersected 6.96 g/t Au over 3.43 meters, within 3.95 g/t Au over 6.58 meters. Where multiple VG-NE particles were in andesite-hosted quartz veins associated with semi-massive to massive sulphides, from the Bonanza Zone, that remains wide open. The intercept is approximately true width, and these assays reflect gold only (AuEq value in the interval will be adjusted accordingly once Ag, Cu, Pb and Zn are received). Drill hole GD-25-350 intersected 5.01 g/t Au over 3.30 meters, from a zone of stockwork and breccia containing VG-NE as well as semi-massive to massive sulphides. Corresponding to the Goldzilla Zone that remains wide open hosted within the sandstone unit. The intercept is approximately true width, and these assays reflect gold only (AuEq value in the interval will be adjusted accordingly once Ag, Cu, Pb and Zn are received). High-grade gold has been identified in three distinct rock packages discovered to date on Surebet. This includes the gently dipping gold-rich stacked quartz-sulphide breccias/stockwork veins; the gold-rich intermediate to felsic Eocene-aged Reduced Intrusive Related Gold (RIRG) dykes; and the recently discovered broad gold-rich zones of calc-silicate altered breccia. All of which contain substantial amounts of VG-NE (from fine-grained to coarse-grained gold) and remain wide open for expansion. This confirms the presence of a Motherlode magmatic source at depth, a causative intrusion responsible for the extensive 1.8 km 2 high-grade gold system at Surebet. The fully funded 2025 systematic drilling campaign has a goal of up to 60,000 meters using 9 drill rigs. The campaign is aimed at expanding the full geometry of the Surebet Discovery laterally and to depth. 100% of the drilling was focused on the Surebet Discovery, where the Company designed a detailed drill plan that consisted of: Testing for the Motherlode Magmatic intrusive gold source; Testing an additional 13 Eocene-aged dykes observed on the surface that had never been drill tested for RIRG mineralization; Infill drilling with the goal of increasing pierce points density in all known stacked veins with a particular focus on the highest-grade areas from the Bonanza Zone and Surebet Zone intersection domain; Testing zones where the RIRG dykes and gently dipping veins crosscut which are being called Goldilocks Zones as they are key locations where there are two styles of gold mineralization enriching the zones; and Expanding the known mineralized veins/zones laterally and to depth where they currently remain open.

Drilling at the Surebet Discovery has hit VG-NE in three distinct rock packages (quartz-sulphide breccias/stock work, RIRG Eocene-aged dykes and calc-silicate altered breccia) showing the untapped discovery potential at this remarkable high-grade gold system that remains open. 100% of the drill holes completed to date on Surebet have intersected substantial quartz-sulphide mineralization and 79% of drill holes completed thus far in 2025 contain VG-NE. This clearly demonstrates the continuity and predictability of this expansive gold-rich system. The Surebet Discovery has widespread drill holes representing more than 400 pierce points over an area of 1.8 km 2 or greater than half the size of Central Park, New York City, returning high metal factors showing it has the potential to be one of the most important high-grade gold discoveries in the Golden Triangle since the Eskay Creek discovery.

TORONTO, Sept. 22, 2025 (GLOBE NEWSWIRE) -- Goliath Resources Limited (TSX-V: GOT) (OTCQB: GOTRF) (FSE: B4IF) ( the “Company” or “Goliath”) is pleased to announce additional assay results from its 2025 drill program where drill hole GD-25-365 intersected 8.45 g/t Au over 7.13 meters, within 5.13 g/t Au over 12.00 meters, including 17.20 g/t Au over 3.35 meters at the Surebet Discovery on its 100% controlled Golddigger Property (the “Property”), Golden Triangle, British Columbia. 100% of the drill holes completed to date on Surebet have intersected substantial quartz-sulphide mineralization as well as 78% of the 2025 drill holes contain visible VG-NE that clearly demonstrates the exceptional discovery potential remaining on the property. The intercepts reported are approximately true width and reflect gold only assays (AuEq values will be adjusted accordingly once Ag, Cu, Pb and Zn are received).

Mr. Roger Rosmus, Founder & CEO of Goliath states: “Evidence that we have made one of the most important grassroots high-grade gold discoveries in the Golden Triangle (since the spectacular Eskay Creek discovery) is building with each new drill hole. We often hear the saying in mining “Grade is King”, when in reality it is truly grade and continuity that is king. I would point to our heat map image showing the widespread VG-NE, over an astounding area (over half the area size of Central Park, New York City and roughly 3 x Empire State Building’s tall) clearly shows remarkable continuity. Which leads to predictability, that has been established since very early in our success at the Surebet discovery. Our geological team has done a wonderful job at targeting the high-grade gold zones and finding new ones in each successive drill campaign. The fact that, to date, we have found VG-NE in three distinct rock packages is indicative of a multi-phased system that was long-lived and powerful. Suggesting a very large magmatic causative source is lurking not far below or laterally to our various high-grade gold zones, is readily apparent. A picture tells a story, and what we can see is a Big Mountain with widespread VG-NE over a large area, that remains open and contains high-grade gold over mineable widths. Ultimately, we feel that the Surebet high-grade gold system is evolving into a significant discovery with the potential to become a future mine one day.”

Description Of Reported Drill Holes

The recent assay results returned several high-grade gold intercepts over mineable widths, confirming the exceptional continuity and predictability of the gold mineralization at Surebet:

Drill hole GD-25-365 intersected 8.45 g/t Au over 7.13 meters, within 5.13 g/t Au over 12.00 meters, including 17.20 g/t Au over 3.35 meters, from an interval containing multiple occurrences of VG-NE within a zone of strong quartz-sulphide veining hosted in the andesite unit belonging to the Bonanza Zone that remains wide open.

Drill hole GD-25-360 returned 6.47 g/t Au over 4.00 meters, within 2.66 g/t Au over 11.10 meters, including part of a quart-sulphide breccia. Further drilling in the Bonanza Zone continues to demonstrate continuity.

Drill hole GD-25-358 intersected two separate gold intervals, both corresponding to the Bonanza Zone. The first being 10.13 g/t Au over 3.00 meters, within 6.09 g/t Au over 5.00 meters from an interval containing VG-NE associated with semi-massive to massive sulphides. The second interval assayed 3.90 g/t Au over 7.00 meters, including 6.33 g/t Au over 4.10 meters, within 2.33 g/t Au over 12.00 meters.

Drill hole GD-25-354 returned 6.96 g/t Au over 3.43 meters, within 3.95 g/t Au over 6.58 meters from the Bonanza Zone where multiple VG-NE particles were observed in andesite-hosted quartz veins, associated with semi-massive to massive sulphides.

Drill hole GD-25-359 intersected 6.38 g/t Au over 3.00 meters, within 5.09 g/t Au over 3.97 meters, from a zone of strong quartz-sulphide stockwork and breccia with multiple occurrences of VG-NE Success also extended to other targets, including the Surebet Zone which remains wide open, where.

Drill hole GD-25-350 intersected 5.01 g/t Au over 3.30 meters from a zone of stockwork and breccia containing VG-NE as well as semi-massive to massive sulphides from the Goldzilla Zone which remains wide open.

All intercepts are approximately true width, and these assays reflect gold only (AuEq value in the interval will be adjusted accordingly once Ag, Cu, Pb and Zn are received). The exceptional gold grades, coupled with VG-NE within substantial quartz-sulphide veins, stockworks, and breccias, which are mineralized with sphalerite, pyrrhotite, and chalcopyrite, highlight the excellent potential for further resource expansion.

Table 1: Assay highlights from 2025 drill holes reported in this news release.

| Hole ID | | From (m) | To (m) | Interval (m) | Au (g/t) | | GD-25-350 | Interval | 316.00 | 319.30 | 3.30 | 5.01 | | GD-25-354 | Interval | 528.57 | 535.15 | 6.58 | 3.95 | | Including | 528.57 | 532.00 | 3.43 | 6.96 | | | GD-25-358 | Interval | 434.00 | 439.00 | 5.00 | 6.09 | | Including | 435.00 | 438.00 | 3.00 | 10.13 | | | Interval | 384.00 | 396.00 | 12.00 | 2.33 | | | Including | 385.00 | 392.00 | 7.00 | 3.90 | | | Including | 387.90 | 392.00 | 4.10 | 6.33 | | | GD-25-359 | Interval | 174.00 | 177.97 | 3.97 | 5.09 | | Including | 174.00 | 177.00 | 3.00 | 6.38 | | | GD-25-360 | Interval | 99.90 | 111.00 | 11.10 | 2.66 | | Including | 106.00 | 110.00 | 4.00 | 6.47 | | | GD-25-365 | Interval | 483.00 | 495.00 | 12.00 | 5.13 | | Including | 487.02 | 494.15 | 7.13 | 8.45 | | | Including | 489.95 | 493.30 | 3.35 | 17.20 | |

High-grade gold mineralization has been confirmed in three distinct rock packages at the Surebet Discovery, which include: gently-dipping gold-rich mineralized stacked quartz-sulphide breccias/stock work veins; gold-rich intermediate to felsic Eocene-aged RIRG dykes that crosscut the veins; and the broad zones of calc-silicate altered breccia. All three rock packages contain substantial amounts of VG-NE (from fine-grained to coarse-grained gold) and remain wide open. Which strongly indicates the presence of a Motherlode magmatic causative source at depth responsible for the widespread high-grade gold mineralization at the Surebet Discovery.

Table 2: Collar information for drill holes reported in this news release.

| Hole ID | CRS | Northing (m) | Easting (m) | Elevation (m) | Azimuth (deg) | Dip (deg) | Length (m) | | GD-25-350 | NAD83 / UTM zone 9N | 6163117 | 457185 | 1702 | 180 | 77 | 849 | | GD-25-354 | NAD83 / UTM zone 9N | 6162856 | 457326 | 1582 | 185 | 72 | 739 | | GD-25-358 | NAD83 / UTM zone 9N | 6162734 | 457228 | 1481 | 219 | 76 | 651 | | GD-25-359 | NAD83 / UTM zone 9N | 6163255 | 457414 | 1733 | 65 | 47 | 276 | | GD-25-360 | NAD83 / UTM zone 9N | 6162507 | 457817 | 1144 | 120 | 65 | 507 | | GD-25-365 | NAD83 / UTM zone 9N | 6162958 | 457041 | 1604 | 97 | 86 | 702 |

The 2025 drill campaign has a goal of up to 60,000 meters of systematic drilling with 9 drill rigs. The campaign is aimed at expanding the full geometry of the Surebet discovery laterally and to depth. 100% of the drilling was focused on the Surebet Discovery, where the Company designed a detailed drill plan that consisted of: testing for the Motherlode Magmatic intrusive gold source; testing an additional 13 Eocene-aged dykes observed on the surface that had never been drill tested for RIRG mineralization; infill drilling with the goal of increasing pierce points density in all known stacked veins with a particular focus on the highest-grade areas from the Bonanza Zone and Surebet Zone intersection domain; testing zones where the RIRG dykes and gently dipping veins crosscut which are being called Goldilocks Zones as they are key locations where there are two styles of gold mineralization enriching the zones; and expanding the known mineralized veins laterally and to depth where they currently remain open.

Surebet Discovery Highlights

82 out of 104 holes (or 79%) drilled thus far in 2025 contain VG-NE and a 100% of drill holes have intersected substantial quartz-sulphide mineralization.

60 out of 64 holes (or 94%) drilled in 2024 contain VG-NE up to 11.5 mm (7/16 inches) in size, all of which returned high-grade gold.

The best hole drilled to date is GD-24-260 previously reported from the Bonanza Zone assayed 34.52 g/t AuEq (34.47 Au and 3.96 Ag) over 39.00 meters, including 132.93 g/t AuEq (132.78 Au and 12.98 Ag) over 10.00 meters, and 166.04 g/t AuEq (165.84 Au and 16.07 Ag) over 8.00 meters delivering a 1346 gram*meter hole (see news release dated January 13, 2025).

The best hole drilled to date from the RIRG Eocene-aged dykes is GD-22-58 that assayed 12.03 g/t AuEq (11.84 g/t Au and 15.61 g/t Ag) over 10.00 meters including 19.91 g/t AuEq (19.62 g/t Au and 25.61 g/t Ag) over 6.00 meters, including 23.82 g/t AuEq (23.47 g/t Au and 30.54 g/t Ag) over 5.00 meters, plus a second separate interval down hole of 8.59 g/t AuEq (8.35 g/t Au and 20.74 g/t Ag) over 5.00 meters (see news release dated March 13, 2025).

The best hole drilled to date from the third distinct rock package consisting of calc-silicate altered breccia is drill hole GD-25-337, which intersected 10.60 g/t Au over 22.82 meters, including 15.19 g/t Au over 15.71 meters, including two separate intervals consisting of 37.28 g/t Au or 1.20 oz/t Au over 3.36 meters and 36.11 or 1.16 oz/t Au over 3.08 meters. The intercept is approximately true width, and these assays reflect gold only (AuEq value in the interval will be adjusted accordingly once Ag, Cu, Pb and Zn are received). Multiple gently-dipping gold-mineralized stacked veins have been identified every year on the Surebet high-grade gold discovery. Recent discoveries include RIRG Eocene-aged dykes, Goldilocks Zones where the veins and vertical RIRG dykes crosscut (which are characterized by having high-grade gold in two temperature regimes) and recently discovered high-grade gold in a third distinct rock package. Which continuously increase the potential tonnage and gold content of the high-grade gold system at the Surebet discovery. A total of 12 stacked gently dipping high-grade gold veins extend for 1.2 kilometers at the Surebet discovery, have been enhanced by four high-grade RIRG Eocene-aged dykes that are up to 25 meters wide and exposed along strike at surface for up to 1,500 meters have been discovered and modelled to date (see news release dated June 23, 2025). The footprint of the mineralization discovered to date at Surebet is 1.8 km 2 , greater then half the size of Central Park in New York City and remains open in all directions. Thanks to the mountainous topography, mineralization in the veins is exposed on the surface for 2.1 km of strike (1.0 km on the south slope and 1.1 km on the north slope) with a vertical relief of 700 meters. A study completed by the Colorado School of Mines confirms a new interpretation of the ore forming process of high-grade gold mineralization at Surebet and outlines a common magmatic source for the high-grade gold system, now in three distinct rock packages. Which gives the Surebet discovery tremendous untapped discovery potential to increase tonnage and gold content in the various known rock package. Until this study, researchers and explorers in the Golden Triangle had not recognized the high-grade gold discovery potential in the Eocene- aged RIRG dykes (see news release March 13, 2025), which is showing the potential that these discoveries could be a geological breakthrough in the Golden Triangle of British Columbia. Goliath has drilled a total of 92,000 meters with over 400 pierce points on the Golddigger property between 2021 and 2024, which culminated in the updated geologic model used for this year’s drill planning. The Surebet Discovery has predictable continuity and very good metallurgy with gold recoveries of 92.2% from gravity and flotation at a 327-micrometer crush including 48.8% free gold recovery from gravity alone (no cyanide required to recover the gold). The metallurgy completed to date shows a benign rock composition without deleterious elements (see news release March 1, 2023). Based on positive grassroots exploration and drill results in recent years, Goliath significantly increased its land package from 66,608 hectares to 91,518 hectares (226,146 acres) and now controls 56 kilometers of key terrain of the Red Line geologic trend providing for additional upside discovery potential. The Golddigger Property is located on tidewater with a barge route to Prince Rupert (190 km south) and close to infrastructure including the town of Kitsault adjacent to a permitted mine site on private property.

About Golddigger Property

The Golddigger Property is 100% controlled and covers an area of 91,518 hectares in a highly prospective geological setting of the Eskay Rift, within 3 kilometers of the Red Line in the Golden Triangle of British Columbia. This area, in close proximity to the Red Line, has hosted some of Canada’s greatest gold mines including Eskay Creek, Premier and Snip. Other significant and well-known deposits in the Golden Triangle include Brucejack, Copper Canyon, Galore Creek, Granduc, KSM, Red Chris, and Schaft Creek. Goliath controls 56 kilometers of the Red Line which is a geologic contact between Triassic age Stuhini rocks and Jurassic age Hazelton rocks used as key markers when exploring for gold-copper-silver mineralization.