Corporate | 6 August 2025 15:58


Pilot Mountain – Significant Drilling Results

Guardian Metal Resources plc / Key word(s): Drilling Result
Pilot Mountain – Significant Drilling Results

06.08.2025 / 15:58 CET/CEST
The issuer is solely responsible for the content of this announcement.

6 August 2025

Guardian Metal Resources plc

(‘Guardian Metal’ or the ‘Company’)

Pilot Mountain – Significant Drilling Results

Desert Scheelite: Further High-Grade Tungsten, Copper, Silver & Zinc

Guardian Metal Resources plc (LON:GMET, OTCQX:GMTLF), a strategic mineral exploration and development company focused in Nevada, USA, is pleased to announce further drillhole assay results from the Company’s ongoing drilling campaign at its 100% owned Pilot Mountain tungsten Project (“Pilot Mountain” or the “Project”) located in Nevada, USA.

Laboratory assay results from drill core samples have been received from the final batch of drillholes at the Desert Scheelite zone covering PM25-41 to PM25-052 (Figure 1, Table 1) with results confirming further significant high-grade tungsten mineralisation over significant widths (Table 2).

To date, a total of 82 drillholes have completed, with 61 drillholes at Desert Scheelite, including 49 resource holes, 7 geotechnical holes and 5 metallurgical holes. At the Garnet Zone all 20 planned resource drillholes have previously been completed and at Porphyry South a single drillhole has been completed to date.

Oliver Friesen, CEO of Guardian Metal, commented:

“We are very pleased to now have all of the results in hand from the Desert Scheelite resource drilling, marking another important step toward our goal of delivering Mined in America tungsten to the United States market. Once again, this latest batch of assays has confirmed zones of high-grade tungsten, copper, silver and zinc, with numerous holes returning significant widths of tungsten mineralisation.

“We now eagerly await initial results from our inaugural Garnet Zone drilling and look forward to commencing drilling at Tempiute in the coming weeks. With multiple rigs soon to be mobilised across our Nevada based co-flagship tungsten projects, Guardian Metal is entering one of its most active and potentially value-accretive periods in the Company’s history, with significant news flow expected over the coming months.”

HIGHLIGHTS

§ Of significance within this particular batch of results is the mineralised widths (>0.10% WO 3 ) encountered throughout several holes as well as the intersection of multiple broad mineralised intervals.

§ These include a mineralised 21.6 m interval in PM25-043, a 33.9 m interval in PM25-045, a 45.7 m interval in PM25-047 and a 24.4 m interval in PM25-051 as well as multiple others throughout the holes reported herein. It is worth noting that the intersections in holes PM25-042, PM25-043 and PM25-045 could be significantly wider accounting for four sample intervals with no core recovery.

§ High-grade individual assay results up to 1.09% W0 3 , 9.98% zinc (Zn), 337ppm silver (Ag), and 1.3% copper (Cu) with select highlight interval of 8.23m of 1.23 % WO 3 Eq or 4.26 % CuEq from PM25-045 nested within a broader 33.9m continuously mineralised interval from that drillhole.

§ Initial Garnet Zone drilling analytical results are expected imminently with inaugural results released to the market in the coming weeks.

§ Several samples from the Company’s newly staked ‘Pilot North Project’ are now in the laboratory with results expected in the coming weeks.

DRILLHOLE INTERSECTIONS

§ Drillhole PM25-041 highlight downhole intersections:

o 10.4 m @ 0.28% WO 3 from 50.9 m – 61.3 m (10.4 m @ 0.30 % WO 3 Eq or 1.03 % CuEq )*, including

– 3 m @ 0.43% WO 3 from 50.9 m – 53.9 m, and

– 1.3 m @ 0.57% WO 3 from 60.0 m – 61.3 m

§ Drillhole PM25-042 highlight downhole intersections:

o 6.1 m @ 0.29% WO 3 from 57.0 m – 63.1 m (6.1 m @ 0.30 % WO 3 Eq or 1.04 % CuEq ), including

– 1.5 m @ 0.43% WO 3 from 58.5 m – 60.0 m

o 11.9m @ 0.27% WO3, 0.32 % Zn, 4.35 g/t Ag & 628 ppm Cu from 69.1 m – 81.0 m (11.9 m @ 0.33 % WO 3 Eq or 1.15 % CuEq ), including

– 1.5 m @ 0.41% WO 3 from 75.0 m – 76.5 m

§ Drillhole PM25-043 highlight downhole intersections:

o 21.6 m @ 0.20% WO 3 , 1.82% Zn, 5.19 g/t Au & 2016 ppm Cu from 44.5 m – 66.1 m (21.6 m @ 0.43 % WO 3 Eq or 1.49 % CuEq ) , including:

– 4.3 m @ 0.32% WO 3 from 47.6 m – 51.8 m;

– 1.8 m @ 0.29% WO 3 from 54.8 m – 56.6 m

o 8.8 m @ 0.29% WO 3 , 0.69% Zn, 10.60 g/t Ag & 796 ppm Cu from 74.1 m – 82.9 m (8.8 m @ 0.41 % WO 3 Eq or 1.41 % CuEq )

§ Drillhole PM25-044 highlight downhole intersections:

o 7.2 m @ 0.42% WO 3 from 84.4 m – 91.6 m (7.16 m @ 0.43 % WO 3 Eq or 1.47 % CuEq )

o 14.1 m @ 0.34% WO 3 , 0.48% Zn, 5.61 g/t Ag & 1671 ppm Cu from 104.9 m – 119.0 m (14.12 m @ 0.45 % WO 3 Eq or 1.54 % CuEq )

§ Drillhole PM25-045 highlight downhole intersections:

o 5.8m @ 0.23% WO 3 , 2.18% Zn, 14.15 g/t Ag & 1686 ppm Cu from 63.1 m – 68.9 m (5.79 m @ 0.51 % WO 3 Eq or 1.78 % CuEq )

o 33.9 m @ 0.31% WO 3 , 1.31% Zn, 28.16 g/t Ag & 1572 ppm Cu from 72.2 m – 106.2 (33.93 m @ 0.57 % WO 3 Eq or 1.96 % CuEq ) including

– 8.2 m @ 0.60 % WO 3 , 3.02% Zn, 67.72 g/t Ag & 4643 ppm Cu from 72.2 m – 80.5 m (8.23 m @ 1.23 % WO 3 Eq or 4.26 % CuEq )

`

§ Drillhole PM25-046 highlight downhole intersections:

o 13.1 m @ 0.14% WO 3 , 0.56% Zn, 6.37g/t Ag & 1334 ppm Cu from 55.2 m – 68.3 m (13.11 m @ 0.25 % WO 3 Eq or 0.86 % CuEq ), including:

– 4.7 m @ 0.24% WO 3 , 0.87% Zn, 9.53g/t Ag & 1910 ppm Cu from 55.2 m – 59.9 m (4.73 m @ 0.40 % WO 3 Eq or 1.39 % CuEq )

§ Drillhole PM25-047 highlight downhole intersections:

o 45.7 m @ 0.24% WO 3 & 15.30 g/t Ag from 74.5 m – 121.5 m (45.65 m @ 0.31 % WO 3 Eq or 1.07 % CuEq )**

§ Drillhole PM25-048 highlight downhole intersections:

o 10.7 m @ 0.35% WO 3 , 1.20% Zn & 21.49 g/t Ag from 180.4 m – 191.1 m (12.19 m @ 0.73 % WO 3 Eq or 2.53 % CuEq )

o 1.5 m @ 0.74% WO3 & 337.0 g/t Ag from 157.6 m – 159.1 m (1.5 m @ 2.03 % WO 3 Eq or 6.98 % CuEq)

§ Drillhole PM25-050 highlight downhole intersections:

o 7.7 m @ 0.28% WO 3 from 167.0 m – 174.7 m (7.65 m @ 0.30 % WO 3 Eq or 1.04 % CuEq )

o 5.9 m @ 0.26% WO 3 from 188.1 m – 194.0 m (5.94 m @ 0.29 % WO 3 Eq or 1.00 % CuEq )

§ Drillhole PM25-051 highlight downhole intersections:

o 24.4 m @ 0.19% WO 3 and 2.88g/t Ag from 127.1 m – 151.5 m (24.39 m @ 0.20 % WO 3 Eq or 0.69 % CuEq )

* Metal Equivalents: Copper Equivalent (“CuEq”) and W0 3 Equivalent (“WO 3 Eq”) are calculated using a tungsten price of US $485/MTU, a zinc price of US$1.241/lb, a copper price of US$4.34/lb and a silver price of US$37.39/Oz (see Table 3).

** Includes up to 1.37m core loss around 115.67m downhole.

Cautionary note: The metal equivalent calculations do not consider any metallurgical factors and assume 100% recovery and 100% payability of all metals, as a result the stated equivalents are provided for illustrative purposes only.

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Figure 1. 2024-25 drillhole map showing the location of all holes drilled to date (excluding Garnet Zone).

RESULTS

Table 1: Drillhole collar table (this RNS)

Hole ID Zone Easting* Northing* Azimuth (deg.) Dip (deg.) Down hole depth (m)
PM25-041 Desert Scheelite 424047.09 4248326.18 179.28 -49.61 86.00
PM25-042 Desert Scheelite 424066.04 4248326.55 177.62 -48.8 94.34
PM25-043 Desert Scheelite 424096.28 4248326.06 179.17 -49.48 99.67
PM25-044 Desert Scheelite 424095.36 4248345.86 176.26 -61.27 145.39
PM25-045 Desert Scheelite 424123.22 4248336.47 181.59 -44.25 124.97
PM25-046 Desert Scheelite 424220.96 4248324.66 179.33 -63.83 80.62
PM25-047 Desert Scheelite 423883.57 4248298.74 184.38 -54.92 163.68
PM25-048 Desert Scheelite 423793.49 4248306.58 179.42 -62.42 210.62
PM25-050 Desert Scheelite 423835.16 4248335.13 179.79 -64.63 213.36
PM25-051 Desert Scheelite 423833.96 4248337.35 182.86 -43.51 185.62
PM25-052 Desert Scheelite 423794.59 4248306.12 178.91 -43.65 171.45

Table 1 notes: All holes HQ core diameter. * UTM WGS84 Zone 11N

Table 2: Significant Diamond Drillhole Assay Results 1

Drill Hole ID Downhole
Depth (m) 		Interval (m) W WO 3 WO 3 Zn Ag Cu Intersection Composites
From To (ppm) a XRF15C (%) b (%) c (%) d (g/t) a (ppm) a (weighted averages)
PM25-041 50.9 53.9 3.00 2,640 0.43 0.43 0.09 1.3 147 10.4m @ 0.28% WO3, 0.1 % Zn,  1.07  g/t Ag & 170 ppm Cu
53.9 57.0 3.10 570 – 0.07 Δ 0.06 0.5 224
57.0 58.5 1.50 2,400 0.34 0.34 0.09 1.5 108
58.5 60.0 1.50 860 0.12 0.12 0.20 1.5 197
60.0 61.3 1.30 3,740 0.57 0.57 0.08 0.9 137
PM25-042 53.5 56.4 2.90 2,410 0.32 0.32 0.10 0.6 806
56.4 57.0 0.60 – – – – – – no recovery
57.0 58.5 1.50 1,570 0.21 0.21 0.08 0.8 137 6.1m @ 0.29% WO3, 0.1 % Zn,  1.32  g/t Ag & 133 ppm Cu
58.5 60.0 1.50 3,000 0.43 0.43 0.16 2.8 202
60.0 61.5 1.50 2,540 0.35 0.35 0.12 1.5 117
61.5 63.1 1.60 1,220 0.16 0.16 0.07 0.3 79
PM25-042 69.1 70.7 1.60 2,250 0.36 0.36 0.31 13.7 670 8.9m @ 0.31% WO3, 0.29 % Zn,  4.9  g/t Ag & 661 ppm Cu 11.9m @ 0.27% WO3, 0.32 % Zn,  4.35  g/t Ag & 628 ppm Cu
70.7 72.2 1.50 1,960 0.27 0.27 0.19 3.4 753
72.2 73.6 1.40 2,330 0.35 0.35 0.13 1.5 422
73.6 75.0 1.40 2,160 0.28 0.28 0.40 1.9 707
75.0 76.5 1.50 2,670 0.41 0.41 0.21 2.9 534
76.5 78.0 1.50 1,510 0.19 0.19 0.47 5.0 864
78.0 79.5 1.50 1,290 0.18 0.18 0.46 3.9 691
79.5 81.0 1.50 940 0.14 0.14 0.35 1.5 372
PM25-043 44.5 46.0 1.49 800 0.11 0.11 0.04 1.3 141
21.63m @ 0.2% WO3, 1.82 % Zn,  5.19  g/t Ag & 2016 ppm Cu
46.0 47.6 1.55 1,080 0.15 0.15 0.05 2.0 123
47.6 49.0 1.45 2,470 0.33 0.33 0.05 0.6 115 4.25m @ 0.32% WO3, 0.04 % Zn,  0.48  g/t Ag & 113 ppm Cu
49.0 50.3 1.30 2,530 0.40 0.40 0.04 0.6 114
50.3 51.8 1.50 1,770 0.23 0.23 0.04 0.3 109
51.8 53.3 1.50 660 – 0.08 Δ 0.04 0.3 72
53.3 54.8 1.47 480 – 0.06 Δ 0.09 1.2 404
54.8 55.2 0.40 1,820 0.31 0.31 0.22 6.3 405 1.83m @ 0.29% WO3, 0.08 % Zn,  1.57  g/t Ag & 122 ppm Cu
55.2 56.6 1.43 2,260 0.29 0.29 0.04 0.3 43
56.6 58.0 1.40 1,310 0.17 0.17 4.41 Ø 5.9 2,060
58.0 59.4 1.40 1,100 0.14 0.14 3.00 Ø 2.9 1,205
59.4 60.4 0.95 2,160 0.29 0.29 2.51 Ø 11.6 3,130 3.5m @ 0.3% WO3, 7.1 % Zn,  20.39  g/t Ag & 10071 ppm Cu
60.4 61.7 1.30 2,120 0.28 0.28 9.98 Ø 22.1 13,000 β
61.7 62.9 1.25 2,330 0.33 0.33 7.58 Ø 25.3 12,300 β
62.9 64.6 1.69 1,030 0.13 0.13 1.16 Ø 5.9 541
64.6 66.1 1.55 1,060 0.14 0.14 1.04 Ø 4.2 693
66.1 70.7 4.57 – – – – – – no recovery
70.7 72.2 1.53 840 0.13 0.13 0.47 7.6 685
72.2 74.1 1.83 – – – – – – no recovery
74.1 75.3 1.22 2,420 0.36 0.36 3.10 Ø 53.2 1,955 8.84m @ 0.29% WO3, 0.69 % Zn,  10.6  g/t Ag & 796 ppm Cu
75.3 76.9 1.61 1,750 0.23 0.23 0.50 10.2 823
76.9 78.3 1.43 1,510 0.20 0.20 0.67 3.0 1,320
78.3 79.9 1.61 1,910 0.36 0.36 0.13 1.5 475
79.9 81.4 1.44 2,250 0.45 0.45 0.11 1.6 327
81.4 82.9 1.53 1,190 0.16 0.16 0.12 2.2 131
PM25-044 84.4 85.7 1.27 870 0.12 0.12 0.04 0.3 284 7.16m @ 0.42% WO3, 0.02 % Zn,  0.45  g/t Ag & 254 ppm Cu
85.7 87.2 1.50 5,310 1.09 1.09 0.01 0.5 250
87.2 88.8 1.55 1,780 0.25 0.25 0.01 0.7 244
88.8 90.3 1.50 2,360 0.32 0.32 0.02 0.3 284
90.3 91.6 1.34 1,730 0.24 0.24 0.03 0.5 208
PM25-044 104.9 106.5 1.57 2,970 0.42 0.42 0.06 0.8 153 14.12m @ 0.34% WO3, 0.48 % Zn,  5.61  g/t Ag & 1671 ppm Cu
106.5 108.0 1.54 3,110 0.43 0.43 0.03 0.3 146
108.0 109.5 1.49 2,630 0.45 0.45 0.07 6.7 917
109.5 111.3 1.82 820 0.12 0.12 0.04 4.2 422
111.3 112.5 1.14 1,690 0.23 0.23 0.06 6.1 428
112.5 113.5 1.08 950 0.13 0.13 0.16 3.8 389
113.5 114.9 1.37 2,720 0.38 0.38 0.12 1.6 413
114.9 116.4 1.52 820 0.12 0.12 0.04 1.9 191
116.4 118.0 1.53 2,920 0.40 0.40 3.26 Ø 15.8 6,240
118.0 119.0 1.06 5,590 0.78 0.78 0.97 18.5 9,140
PM25-045 63.1 64.6 1.53 1,770 0.23 0.23 0.06 0.8 61 5.79m @ 0.23% WO3, 2.18 % Zn,  14.15  g/t Ag & 1686 ppm Cu
64.6 66.8 2.13 1,490 0.31 0.31 2.73 Ø 27.4 2,720
66.8 68.9 2.13 1,150 0.16 0.16 3.15 Ø 10.5 1,820
68.9 72.2 3.36 – – – – – – no recovery
72.2 76.4 4.11 3,660 0.51 0.51 4.56 Ø 61.8 4,260 8.23m @ 0.6% WO3, 3.02 % Zn,  67.72  g/t Ag & 4643 ppm Cu 33.93m @ 0.31% WO3, 1.31 % Zn,  28.16  g/t Ag & 1572 ppm Cu
76.4 79.0 2.64 4,420 0.80 0.80 1.37 Ø 102.0 λ 5,750
79.0 80.5 1.48 3,090 0.51 0.51 1.69 Ø 23.0 3,730
80.5 81.7 1.19 2,400 0.33 0.33 0.61 6.6 1,395
81.7 83.1 1.40 2,150 0.29 0.29 1.08 Ø 2.6 741
83.1 84.4 1.37 1,500 0.20 0.20 2.33 Ø 7.5 2,100
84.4 86.0 1.57 2,470 0.33 0.33 0.90 212.0 λ 242
86.0 87.5 1.48 1,850 0.24 0.24 3.66 Ø 9.1 3,010
87.5 89.0 1.52 1,600 0.22 0.22 1.76 Ø 2.4 419
89.0 90.5 1.53 1,690 0.22 0.22 2.01 Ø 7.7 367
90.5 92.0 1.47 2,420 0.32 0.32 0.25 0.8 320
92.0 93.6 1.57 2,820 0.38 0.38 0.08 1.0 229
93.6 95.1 1.50 2,320 0.32 0.32 0.19 1.0 309
95.1 96.6 1.55 620 – 0.08 Δ 0.05 0.6 81
96.6 98.1 1.50 1,420 0.19 0.19 0.04 0.3 95
98.1 99.7 1.55 560 – 0.07 Δ 0.02 0.8 176
99.7 101.4 1.75 700 – 0.09 Δ 0.02 0.8 307
101.4 103.2 1.75 940 0.13 0.13 0.05 0.3 167
103.2 104.7 1.50 1,920 0.26 0.26 0.12 1.1 218
104.7 106.2 1.50 840 0.12 0.12 0.26 2.8 345
PM25-046 55.2 56.7 1.53 1,510 0.20 0.20 0.81 18.8 3,560 4.73m @ 0.24% WO3, 0.87 % Zn,  9.53  g/t Ag & 1910 ppm Cu 13.11m @ 0.14% WO3, 0.56 % Zn,  6.37  g/t Ag & 1334 ppm Cu
56.7 57.6 0.90 2,550 0.36 0.36 1.43 Ø 9.1 3,180
57.6 58.4 0.77 620 – 0.08 Δ 0.91 5.8 627
58.4 59.9 1.53 2,110 0.29 0.29 0.59 2.4 160
59.9 61.4 1.50 130 – 0.02 Δ 0.17 0.8 90
61.4 62.9 1.50 200 – 0.03 Δ 0.11 0.9 161
62.9 64.1 1.20 1,350 0.18 0.18 1.36 Ø 6.7 827
64.1 65.4 1.30 20 – 0.00 Δ 0.08 0.7 92
65.4 66.9 1.50 1,340 0.18 0.18 0.22 5.9 604
66.9 68.3 1.38 770 0.11 0.11 0.55 13.1 4,390
PM25-047 74.5 76.0 1.50 3,750 0.49 0.49 0.02 2.7 160 45.65m @ 0.24% WO3, 0.07 % Zn,  15.62  g/t Ag & 144 ppm Cu (Includes up to 1.37m core loss around 115.67m downhole)
76.0 77.5 1.50 2,840 0.36 0.36 0.03 1.6 90
77.5 79.0 1.50 3,470 0.48 0.48 0.02 2.3 65
79.0 80.5 1.48 1,530 0.20 0.20 0.04 2.7 60
80.5 82.0 1.50 3,850 0.53 0.53 0.02 2.1 52
82.0 83.5 1.50 3,370 0.46 0.46 0.01 1.1 46
83.5 85.0 1.50 1,650 0.22 0.22 0.02 0.3 36
85.0 86.1 1.08 530 – 0.07 Δ 0.03 0.3 49
86.1 87.8 1.69 350 – 0.04 Δ 0.13 14.3 263
87.8 88.5 0.71 1,080 – 0.14 Δ 0.02 1.3 44
88.5 89.8 1.32 610 – 0.08 Δ 0.13 31.4 153
89.8 91.3 1.50 1,280 – 0.16 Δ 0.04 0.9 107
91.3 92.6 1.30 2,940 0.38 0.38 0.20 35.7 264
92.6 93.7 1.10 1,360 – 0.17 Δ 0.09 46.1 101
93.7 95.8 2.10 1,830 0.29 0.29 0.31 107.0 λ 163
95.8 97.3 1.50 1,690 0.22 0.22 0.09 34.9 72
97.3 98.8 1.50 1,950 0.35 0.35 0.38 79.8 199
98.8 100.3 1.50 140 – 0.02 Δ 0.05 3.7 50
100.3 101.6 1.30 2,480 0.34 0.34 0.01 0.3 14
101.6 102.5 0.90 210 – 0.03 Δ 0.03 1.3 72
102.5 104.0 1.50 140 – 0.02 Δ 0.01 0.3 59
104.0 105.5 1.50 50 – 0.01 Δ 0.01 0.8 372
105.5 106.8 1.27 840 0.12 0.12 0.02 1.5 874
106.8 108.4 1.61 970 0.13 0.13 0.04 2.7 164
108.4 109.7 1.32 280 – 0.04 Δ 0.01 0.3 109
109.7 111.2 1.50 2,540 0.45 0.45 0.01 0.3 217
111.2 112.1 0.92 2,190 0.44 0.44 0.02 0.9 90
112.1 113.6 1.50 2,640 0.34 0.34 0.14 52.5 50
113.6 115.1 1.50 3,060 0.40 0.40 0.01 0.5 130
115.1 115.7 0.55 1,490 – 0.19 Δ 0.02 0.3 85
117.0 118.5 1.50 2,940 0.39 0.39 0.02 7.3 65
118.5 120.0 1.50 700 – 0.09 Δ 0.06 12.4 201
120.0 121.5 1.50 1,580 0.20 0.20 0.05 4.1 178
PM25-048 157.6 159.1 1.50 2,790 0.74 0.74 0.67 337.0 λ 79
180.4 182.0 1.55 2,090 0.29 0.29 1.33 Ø 11.7 106 12.19m @ 0.4% WO3, 1.14 % Zn,  60.31  g/t Ag & 787 ppm Cu
182.0 182.8 0.80 2,400 0.30 0.30 1.89 Ø 3.5 261
182.8 183.7 0.97 4,190 1.06 1.06 2.16 Ø 9.0 4,880
183.7 185.2 1.50 1,360 0.19 0.19 0.13 0.3 139
185.2 186.7 1.50 2,830 0.37 0.37 1.56 Ø 88.1 706
186.7 188.2 1.50 4,130 0.57 0.57 1.91 Ø 4.5 1,690
188.2 189.8 1.55 250 – 0.03 Δ 0.23 6.0 47
189.8 191.1 1.32 1,600 0.21 0.21 1.12 Ø 39.0 377
PM25-050 167.0 168.0 1.00 810 0.11 0.11 0.02 1.1 89 7.65m @ 0.28% WO3, 0.03 % Zn,  3.62  g/t Ag & 154 ppm Cu
168.0 168.9 0.90 3,000 0.40 0.40 0.02 1.9 477
168.9 170.2 1.25 3,060 0.42 0.42 0.02 3.8 461
170.2 170.8 0.65 560 – 0.07 Δ 0.01 2.8 37
170.8 172.3 1.48 2,620 0.34 0.34 0.02 0.3 15
172.3 173.6 1.27 1,760 0.23 0.23 0.02 0.5 6
173.6 174.7 1.10 2,100 0.28 0.28 0.08 15.7 30
PM25-050 188.1 189.5 1.44 3,360 0.45 0.45 0.02 2.7 57 5.94m @ 0.26% WO3, 0.06 % Zn,  4.25  g/t Ag & 159 ppm Cu
189.5 191.1 1.61 680 – 0.09 Δ 0.15 8.6 108
191.1 192.5 1.39 2,520 0.35 0.35 0.06 4.1 329
192.5 194.0 1.50 1,530 0.20 0.20 0.02 1.2 154
PM25-051 127.1 128.6 1.53 1,770 0.24 0.24 0.01 0.3 26 24.39m @ 0.19% WO3, 0.03 % Zn,  2.88  g/t Ag & 49 ppm Cu
128.6 130.2 1.52 980 – 0.12 Δ 0.00 0.3 49
130.2 131.4 1.22 2,510 0.35 0.35 0.00 0.3 18
131.4 132.6 1.27 440 – 0.06 Δ 0.02 0.3 24
132.6 134.1 1.50 1,670 0.22 0.22 0.08 1.7 37
134.1 135.6 1.50 550 – 0.07 Δ 0.12 30.2 114
135.6 137.3 1.67 30 – 0.00 Δ 0.02 1.8 219
137.3 138.8 1.46 180 – 0.02 Δ 0.05 3.2 28
138.8 140.1 1.28 1,250 0.17 0.17 0.01 1.3 39
140.1 141.2 1.17 1,920 0.25 0.25 0.02 2.5 34
141.2 142.4 1.20 560 – 0.07 Δ 0.03 1.8 57
142.4 144.1 1.63 590 – 0.07 Δ 0.02 1.7 37
144.1 145.7 1.64 30 – 0.00 Δ 0.01 0.3 16
145.7 147.2 1.50 4,460 0.59 0.59 0.01 0.3 27
147.2 148.4 1.25 2,290 0.41 0.41 0.02 1.8 36
148.4 150.0 1.52 2,960 0.40 0.40 0.01 0.3 33
150.0 151.5 1.53 1,400 0.19 0.19 0.01 0.3 12

Table 2 notes: Summary of certificated assay results provided by accredited laboratory ALS USA Inc

Analytical methods utilised:  ME-ICP61 for all samples, with ME-ICP61 overlimit samples also analysed using Ore Grade packages Ag-OG62, Cu-OG62, Pb-OG62, Zn-OG62, and W-XRF15c for high-grade tungsten.

ppm: parts per million, 10,000 ppm = 1%

a: ALS method ME-ICP61;

b: WO 3 % from method ME-XRF15c

c: ALS method Zn-OG62

Δ: denotes WO 3 % calculated using W ppm (ME-ICP61) calculated as W % multiplied by 1.2611

F : denotes Zn % from overlimit method Zn-OG62

β denotes Cu % from overlimit method Cu-OG62

λ denotes Ag g/t from overlimit method Ag-OG62

Table 3: Summary of Calculated Metal Equivalents for Significant Diamond Drillhole Assay Results 1

Hole ID Down hole (m) Metal Equivalents
From To Interval CuEq (%) WO 3 EQ (%)
PM25-041 50.9 61.3 10.4 1.03 0.30
PM25-042 57 63.1 6.1 1.04 0.30
69.1 78 8.9 1.28 0.37
69.1 81 11.9 1.15 0.33
PM25-043 47.55 51.8 4.25 1.12 0.32
54.77 56.6 1.83 1.07 0.31
59.4 62.9 3.5 4.33 1.26
44.51 66.14 21.63 1.49 0.43
74.07 82.91 8.84 1.41 0.41
PM25-044 84.43 91.59 7.16 1.47 0.43
104.9 119.02 14.12 1.54 0.45
PM25-045 63.09 68.88 5.79 1.78 0.51
72.24 80.47 8.23 4.26 1.23
72.24 106.17 33.93 1.96 0.57
PM25-046 55.17 59.9 4.73 1.39 0.40
55.17 68.28 13.11 0.86 0.25
PM25-047 75.89 121.54 45.65 1.07 0.31
PM25-048 157.6 159.1 1.5 6.98 2.03
PM25-048 180.42 191.11 10.69 1.91 0.55
PM25-050 167 174.65 7.65 1.04 0.30
188.06 194 5.94 1.00 0.29
PM25-050 127.1 151.49 24.39 0.69 0.20
Basket Prices (as of 5 August 2025)
Tungsten (WO 3 ) Price ($/MTU) 485.0
Silver Price ($/Oz) 37.39
Zinc Price ($/lb) 1.2412
Copper Price ($/lb) 4.340
Cautionary note : The metal equivalent calculations do not consider any metallurgical factors and assume 100% recovery and 100% payability of all metals, as a result the stated equivalents are provided for illustrative purposes only.

COMPETENT PERSON STATEMENT

The technical information contained in this disclosure has been read and approved by Mr Nick O’Reilly (MSc, DIC, MIMMM QMR, MAusIMM, FGS), who is a qualified geologist and acts as the Competent Person under the AIM Rules – Note for Mining and Oil & Gas Companies. Mr O’Reilly is a Principal consultant working for Mining Analyst Consulting Ltd which has been retained by Guardian Metal Resources plc to provide technical support.

This announcement contains inside information for the purposes of Article 7 of EU Regulation 596/2014 (which forms part of domestic UK law pursuant to the European Union (Withdrawal) Act 2018). The Directors of the Company take responsibility for the contents of this announcement.

Forward Looking Statements

This announcement contains forward-looking statements relating to expected or anticipated future events and anticipated results that are forward-looking in nature and, as a result, are subject to certain risks and uncertainties, such as general economic, market and business conditions, competition for qualified staff, the regulatory process and actions, technical issues, new legislation, uncertainties resulting from potential delays or changes in plans, uncertainties resulting from working in a new political jurisdiction, uncertainties regarding the results of exploration, uncertainties regarding the timing and granting of prospecting rights, uncertainties regarding the timing and granting of regulatory and other third party consents and approvals, uncertainties regarding the Company’s or any third party’s ability to execute and implement future plans, and the occurrence of unexpected events.

Actual results achieved may vary from the information provided herein as a result of numerous known and unknown risks and uncertainties and other factors.

For further information visit www.Guardianmetalresources.com or contact the following:

Guardian Metal Resources plc
Oliver Friesen (CEO) 		Tel: +44 (0) 20 7583 8304
Cairn Financial Advisers LLP
Nominated Adviser
Sandy Jamieson/Jo Turner/Louise O’Driscoll 		Tel: +44 20 7213 0880
Shard Capital Partners LLP
Lead Broker
Damon Heath/Erik Woolgar 		Tel: +44 (0) 20 7186 9000

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com .


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2180374  06.08.2025 CET/CEST