Winston Tailings Project: Batch 6 Assay Results
Panther Metals PLC has announced the completion of the sixth and final batch of assay results for the Winston Tailings Project in Ontario, Canada, which are crucial for the Mineral Resource estimate. The results from twenty-five Vibracore collar locations and supplementary samples show consistent grades of gold, silver, zinc, copper, cobalt, gallium, and indium. The company noted that the maximum vertical thickness of tailings intersected was 16.8m, with an average of 8.7m. This data will feed into mineral resource modelling and metallurgical recovery workstreams, with the company anticipating that major pre-processing plant costs are behind them as they move towards engineering design and a Mining Recovery Permit application.
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Panther Metals PLC (LSE: PALM), the exploration company focused on mineral projects in Canada, is very pleased to report the sixth and final batch ("Batch 6") of Vibracore sample assay results for the Winston Tailings Project near Schrieber, Ontario, Canada. In addition, the assay results of supplementary samples collected from 49 of the 109 collar locations during the programme are also provided.
Key points:
- Sixth and final batch of tailings core sample assay results (Table 1) received for twenty five Vibracore collar locations (WT-26-022, WT-26-029, WT-26-040, WT-26-046, WT-26-047, WT-26-048, WT-26-057, WT-26-060, WT-26-064, WT-26-066, WT-26-067, WT-26-068A, WT-26-069, WT-26-076, WT-26-077, WT-26-078, WT-26-079, WT-26-084, WT-26-086A, WT-26-087, WT-26-090, WT-26-092, WT-26-094, WT-26-096 & WT-26-097) situated upon seventeen east-west profiles (Figure 1).
- Assay results for supplementary samples collected during the Vibracore programme are provided in Table 2. Supplementary samples for a total of forty nine Vibracore hole locations were collected in numbered sample bags or sample buckets as opposed to the Vibracore cylinders. Supplementary samples include material collected by hand auger from the top 30cm of tailings at the hole collar (in cases where Vibracore recovery at the top of the hole was unsatisfactory), duplicate sample collected within the hole, and sample material collected from the bottom section of the Vibracore hole as rods were pulled and cleaned.
- Assayed Vibracore intersections reported for Batch 6 are taken from total tailings thicknesses varying between 2.0m to 16.8m (Table 3). The maximum vertical thickness of tailings (below ice and water) intersected across the TSF is 16.8m with an average vertical thickness of 8.7m.1
- Vibracore samples comprise HQ core (63.5mm) diameter cylinders of tailings material through the vertical profile of the tailings, collected from the surface of the tailings (situated below ice and water cover) to the base of the tailings. Supplementary samples were collected into numbered sample bags and buckets.
- These final results continue to show good grade consistency across the vertical depth-profile and laterally between Vibracore hole collar locations, and support or exceed the 2025 preliminary assay results announced 31 July 2025 and the results announced 17 March 2026, 19 March 2026, 14 April 2026, 28 April 2026 and 11 May 2026. 2,3,4,5,6
Darren Hazelwood, Chief Executive Officer commented:
"These final, remarkably consistent and exciting assay results mark the completion of the on-the-ground tailings sampling work at Winston and the Vibracore results are feeding into the Mineral Resource modelling and estimation, and metallurgical recovery work streams.
Given the significant power, transport and water infrastructure existing on-site, and the highly professional ongoing site management by First Quantum, we anticipate our major costs at Winston, pre-processing plant, are behind us. The next phase of groundwork will be relatively low-cost, and will concern the engineering design for the exploitation and reprocessing of the tailings, in support of our Mining Recovery Permit application.
As we enter this new chapter of exciting work at the Winston Tailings Project, we are buoyed by the growing interest from potential investment partners and look forward to providing updates as the work progresses."
Table 1: Winston Tailings Vibracore Sample Assay Results Batch 6
| Vibracore | Vertical Depth (m) | Au | Ag | Zn* | Cu | Co | Ga | In | |
|---|---|---|---|---|---|---|---|---|---|
| Hole ID | From | To | (g/t) | (g/t) | (%) | (%) | (ppm) | (ppm) | (ppm) |
| WT-26-022 | 1.77 | 4.77 | 0.768 | 13.55 | 1.260 | 0.137 | 328.0 | 76.4 | 9.81 |
| 4.77 | 6.27 | 0.737 | 13.30 | 2.360 | 0.178 | 257.0 | 76.1 | 17.15 | |
| 6.27 | 7.77 | 0.612 | 13.05 | 3.280 | 0.218 | 271.0 | 70.2 | 22.90 | |
| 7.77 | 9.27 | 0.743 | 14.55 | 5.120 | 0.291 | 287.0 | 76.5 | 38.60 | |
| 9.27 | 9.53 | 0.493 | 10.15 | 2.410 | 0.154 | 214.0 | 71.8 | 15.55 | |
| WT-26-029 | 3.27 | 4.77 | 0.289 | 7.45 | 1.240 | 0.135 | 239.0 | 77.9 | 10.80 |
| 4.77 | 6.27 | 0.246 | 9.09 | 1.495 | 0.148 | 294.0 | 75.3 | 10.45 | |
| 6.27 | 7.77 | 0.395 | 10.65 | 1.030 | 0.117 | 370.0 | 92.4 | 12.50 | |
| 7.77 | 9.27 | 0.493 | 11.20 | 1.215 | 0.115 | 329.0 | 88.3 | 10.45 | |
| 9.27 | 10.77 | 0.548 | 10.10 | 1.160 | 0.103 | 231.0 | 82.3 | 9.98 | |
| 10.77 | 12.27 | 0.606 | 11.40 | 1.140 | 0.106 | 209.0 | 88.9 | 9.69 | |
| 12.27 | 13.77 | 0.647 | 11.35 | 1.195 | 0.107 | 237.0 | 81.9 | 9.48 | |
| 13.77 | 15.27 | 0.534 | 10.40 | 1.210 | 0.107 | 275.0 | 83.6 | 9.71 | |
| 15.27 | 15.9 | 0.573 | 10.95 | 1.130 | 0.102 | 253.0 | 84.8 | 8.85 | |
| WT-26-040 | 3.27 | 4.77 | 0.792 | 12.90 | 1.305 | 0.228 | 226.0 | 107.0 | 18.55 |
| 4.77 | 6.27 | 0.469 | 8.19 | 0.958 | 0.120 | 218.0 | 69.9 | 8.22 | |
| 6.27 | 7.77 | 0.541 | 11.00 | 1.155 | 0.122 | 288.0 | 86.2 | 9.80 | |
| 7.77 | 9.27 | 0.503 | 10.10 | 0.971 | 0.120 | 271.0 | 93.0 | 8.22 | |
| 9.27 | 10.77 | 0.633 | 14.75 | 0.764 | 0.103 | 391.0 | 99.0 | 6.99 | |
| 10.77 | 12.27 | 0.551 | 11.20 | 0.818 | 0.113 | 271.0 | 83.3 | 7.44 | |
| 12.27 | 13.77 | 0.469 | 12.55 | 1.040 | 0.109 | 360.0 | 91.0 | 8.58 | |
| 13.77 | 14.77 | 0.490 | 10.20 | 0.736 | 0.093 | 253.0 | 77.4 | 6.29 | |
| WT-26-046 | 4.77 | 6.27 | 0.367 | 5.81 | 0.775 | 0.083 | 128.0 | 48.1 | 5.68 |
| 6.27 | 7.77 | 0.399 | 9.88 | 1.300 | 0.132 | 312.0 | 94.4 | 13.85 | |
| 7.77 | 9.27 | 0.396 | 8.26 | 1.275 | 0.110 | 374.0 | 82.5 | 10.65 | |
| 9.27 | 10.77 | 0.363 | 8.54 | 1.215 | 0.117 | 332.0 | 82.2 | 11.10 | |
| 10.77 | 12.27 | 0.423 | 9.55 | 1.245 | 0.119 | 329.0 | 88.8 | 11.05 | |
| 12.27 | 13.77 | 0.342 | 8.38 | 1.285 | 0.112 | 277.0 | 97.6 | 12.85 | |
| 13.77 | 15.27 | 0.334 | 8.55 | 1.345 | 0.111 | 320.0 | 91.2 | 11.80 | |
| 15.27 | 16.77 | 0.378 | 10.25 | 1.480 | 0.146 | 447.0 | 94.6 | 13.80 | |
| 16.77 | 17.14 | 0.350 | 14.30 | 1.920 | 0.160 | 423.0 | 101.0 | 16.30 | |
| WT-26-047 | 9.27 | 10.77 | 0.240 | 7.94 | 1.085 | 0.103 | 198.0 | 63.2 | 7.47 |
| 10.77 | 12.27 | 0.227 | 7.98 | 1.205 | 0.107 | 174.0 | 69.6 | 10.10 | |
| 12.27 | 13.77 | 0.320 | 11.40 | 1.310 | 0.126 | 309.0 | 99.0 | 12.80 | |
| 13.77 | 15.27 | 0.320 | 10.25 | 1.085 | 0.123 | 262.0 | 89.1 | 11.30 | |
| 15.27 | 16.77 | 0.373 | 8.90 | 1.040 | 0.117 | 290.0 | 83.1 | 10.55 | |
| 16.77 | 18.27 | 0.295 | 8.45 | 0.908 | 0.115 | 261.0 | 81.7 | 10.20 | |
| 18.27 | 19.5 | 0.325 | 9.28 | 1.440 | 0.121 | 372.0 | 90.7 | 13.50 | |
| WT-26-048 | 8.6 | 10.1 | 0.252 | 8.09 | 1.270 | 0.112 | 217.0 | 72.3 | 10.35 |
| 10.1 | 11.6 | 0.221 | 7.14 | 0.946 | 0.092 | 158.5 | 70.2 | 7.13 | |
| 11.6 | 13.1 | 0.232 | 9.32 | 1.515 | 0.123 | 285.0 | 84.9 | 12.40 | |
| 13.1 | 14.6 | 0.326 | 8.57 | 1.445 | 0.115 | 327.0 | 92.9 | 13.25 | |
| 14.6 | 16.1 | 0.347 | 9.06 | 1.305 | 0.116 | 323.0 | 87.2 | 11.50 | |
| 16.1 | 17.6 | 0.450 | 10.70 | 1.090 | 0.120 | 364.0 | 86.1 | 11.00 | |
| 17.6 | 19.1 | 0.382 | 11.25 | 1.150 | 0.120 | 310.0 | 93.1 | 10.30 | |
| 19.1 | 20.6 | 0.329 | 9.30 | 1.245 | 0.120 | 346.0 | 82.8 | 10.90 | |
| WT-26-057 | 19 | 20.5 | 0.107 | 3.42 | 0.985 | 0.099 | 56.2 | 23.6 | 7.90 |
| WT-26-060 | 3.4 | 4.9 | 0.255 | 8.05 | 1.175 | 0.112 | 225.0 | 62.8 | 7.28 |
| 4.9 | 6.4 | 0.287 | 9.18 | 1.770 | 0.138 | 344.0 | 93.7 | 16.20 | |
| 6.4 | 7.9 | 0.215 | 8.04 | 1.770 | 0.117 | 363.0 | 88.4 | 16.65 | |
| 7.9 | 9.4 | 0.297 | 10.80 | 1.615 | 0.126 | 468.0 | 115.5 | 17.30 | |
| 9.4 | 10.9 | 0.331 | 12.80 | 1.755 | 0.205 | 526.0 | 103.5 | 19.20 | |
| 10.9 | 12.4 | 0.371 | 13.45 | 2.020 | 0.153 | 462.0 | 95.2 | 18.00 | |
| 12.4 | 13.9 | 0.384 | 14.60 | 1.715 | 0.122 | 350.0 | 93.0 | 13.95 | |
| 13.9 | 14.98 | 0.006 | 2.58 | 0.045 | 0.007 | 36.2 | 16.9 | 0.40 | |
| WT-26-064 | 4.6 | 6.1 | 0.576 | 10.85 | 1.335 | 0.149 | 313.0 | 89.2 | 10.95 |
| 6.1 | 7.6 | 0.673 | 10.60 | 1.675 | 0.172 | 334.0 | 85.4 | 13.30 | |
| 7.6 | 9.1 | 0.335 | 13.20 | 1.780 | 0.158 | 407.0 | 109.5 | 16.30 | |
| 9.1 | 10.6 | 0.332 | 12.55 | 1.280 | 0.117 | 439.0 | 97.1 | 12.45 | |
| 10.6 | 12.1 | 0.555 | 14.05 | 0.912 | 0.107 | 396.0 | 91.2 | 8.48 | |
| 12.1 | 13.6 | 0.612 | 13.40 | 0.795 | 0.105 | 310.0 | 88.4 | 7.13 | |
| 13.6 | 15.1 | 0.545 | 14.50 | 0.776 | 0.114 | 302.0 | 93.8 | 8.31 | |
| 15.1 | 16.43 | 0.578 | 12.20 | 1.130 | 0.120 | 251.0 | 71.7 | 9.19 | |
| WT-26-066 | 2.5 | 4 | 0.688 | 12.45 | 0.857 | 0.144 | 298.0 | 90.0 | 7.64 |
| 4 | 5.5 | 0.589 | 13.25 | 0.989 | 0.105 | 301.0 | 82.0 | 8.88 | |
| 5.5 | 7 | 0.436 | 13.75 | 1.235 | 0.118 | 459.0 | 90.1 | 12.00 | |
| 7 | 8.5 | 0.724 | 15.80 | 0.893 | 0.126 | 353.0 | 87.7 | 8.04 | |
| 8.5 | 10 | 0.684 | 14.20 | 0.878 | 0.123 | 330.0 | 85.0 | 7.90 | |
| 10 | 11.5 | 0.482 | 11.85 | 0.770 | 0.109 | 312.0 | 79.9 | 7.25 | |
| 11.5 | 13 | 0.781 | 13.05 | 1.295 | 0.132 | 212.0 | 81.6 | 9.95 | |
| 13 | 14.5 | 0.939 | 13.90 | 1.100 | 0.128 | 120.0 | 92.9 | 7.20 | |
| 14.5 | 15.5 | 0.958 | 15.05 | 1.245 | 0.126 | 156.5 | 94.4 | 7.96 | |
| WT-26-067 | 2.5 | 4 | 0.496 | 11.45 | 0.839 | 0.141 | 218.0 | 111.5 | 9.23 |
| 4 | 5.5 | 0.543 | 11.60 | 0.894 | 0.141 | 211.0 | 112.0 | 10.15 | |
| 5.5 | 7 | 0.433 | 16.55 | 1.235 | 0.177 | 488.0 | 109.0 | 15.90 | |
| 7 | 8.5 | 0.487 | 13.25 | 1.055 | 0.121 | 380.0 | 112.5 | 11.70 | |
| 8.5 | 10 | 0.553 | 13.30 | 1.035 | 0.123 | 326.0 | 101.5 | 10.40 | |
| WT-26-068A | 2.5 | 4 | 0.466 | 10.05 | 1.085 | 0.117 | 329.0 | 96.7 | 10.85 |
| 4 | 5.5 | 0.599 | 10.95 | 0.946 | 0.117 | 322.0 | 94.2 | 9.03 | |
| 5.5 | 7 | 0.444 | 10.55 | 1.035 | 0.107 | 386.0 | 100.5 | 10.20 | |
| 7 | 8.5 | 0.424 | 14.30 | 1.695 | 0.158 | 467.0 | 112.0 | 17.90 | |
| 8.5 | 9.85 | 0.406 | 13.15 | 1.175 | 0.115 | 388.0 | 104.0 | 12.90 | |
| WT-26-069 | 4 | 5.5 | 0.189 | 9.90 | 1.740 | 0.160 | 316.0 | 90.3 | 15.60 |
| 5.5 | 7 | 0.358 | 11.50 | 1.260 | 0.110 | 348.0 | 93.3 | 10.50 | |
| 7 | 7.95 | 0.609 | 11.35 | 1.390 | 0.140 | 267.0 | 78.1 | 8.83 | |
| WT-26-076 | 1 | 2.5 | 0.570 | 11.75 | 1.935 | 0.198 | 310.0 | 74.4 | 16.40 |
| 2.5 | 4 | 0.843 | 16.60 | 1.395 | 0.198 | 349.0 | 94.8 | 15.75 | |
| 4 | 5.5 | 0.383 | 13.40 | 1.470 | 0.122 | 402.0 | 97.2 | 13.45 | |
| 5.5 | 7 | 0.441 | 12.30 | 1.355 | 0.126 | 356.0 | 92.6 | 11.70 | |
| 7 | 7.95 | 0.616 | 12.95 | 2.120 | 0.146 | 369.0 | 87.4 | 16.00 | |
| WT-26-077 | 1 | 2.5 | 0.511 | 15.25 | 0.812 | 0.122 | 316.0 | 86.8 | 8.19 |
| 2.5 | 4 | 0.409 | 13.95 | 0.970 | 0.147 | 411.0 | 93.2 | 12.70 | |
| 4 | 5.5 | 0.455 | 19.40 | 1.490 | 0.214 | 497.0 | 101.5 | 17.50 | |
| WT-26-078 | 1 | 2.5 | 0.553 | 12.00 | 1.500 | 0.170 | 333.0 | 88.6 | 12.70 |
| 2.5 | 4 | 0.358 | 10.00 | 1.255 | 0.163 | 262.0 | 63.2 | 10.40 | |
| WT-26-079 | 1 | 4 | 0.569 | 12.85 | 1.095 | 0.143 | 359.0 | 83.9 | 9.93 |
| 4 | 5.5 | 0.281 | 13.45 | 1.325 | 0.124 | 455.0 | 92.0 | 15.05 | |
| 5.5 | 7 | 0.399 | 11.55 | 1.090 | 0.124 | 361.0 | 87.4 | 10.30 | |
| WT-26-084 | 1 | 2.5 | 0.299 | 11.35 | 1.255 | 0.123 | 221.0 | 85.0 | 12.25 |
| 2.5 | 4 | 0.637 | 15.70 | 1.180 | 0.133 | 359.0 | 93.1 | 10.75 | |
| 4 | 5.5 | 0.733 | 13.25 | 1.245 | 0.123 | 329.0 | 79.7 | 9.99 | |
| 5.5 | 7 | 0.932 | 14.40 | 2.000 | 0.165 | 244.0 | 78.3 | 13.90 | |
| WT-26-086A | 2.5 | 4 | 0.752 | 15.15 | 1.280 | 0.148 | 327.0 | 92.4 | 10.75 |
| 4 | 5.5 | 0.755 | 10.10 | 0.805 | 0.111 | 268.0 | 67.2 | 6.03 | |
| WT-26-087 | 1 | 2.5 | 0.956 | 16.05 | 1.545 | 0.199 | 310.0 | 87.6 | 13.10 |
| 2.5 | 4 | 0.901 | 16.70 | 2.170 | 0.201 | 356.0 | 92.9 | 17.80 | |
| WT-26-090 | 1 | 2.5 | 0.779 | 15.75 | 1.200 | 0.137 | 484.0 | 99.5 | 14.75 |
| 2.5 | 4 | 0.467 | 14.80 | 1.205 | 0.122 | 394.0 | 98.0 | 11.15 | |
| 4 | 5.5 | 0.457 | 14.40 | 0.999 | 0.110 | 353.0 | 86.6 | 7.99 | |
| 5.5 | 7 | 0.625 | 12.95 | 1.355 | 0.115 | 336.0 | 86.6 | 10.95 | |
| 7 | 8.95 | 0.770 | 12.90 | 2.410 | 0.192 | 292.0 | 92.7 | 17.35 | |
| WT-26-092 | 2.5 | 4 | 0.449 | 13.60 | 1.085 | 0.140 | 407.0 | 102.0 | 13.45 |
| 4 | 5.5 | 0.404 | 14.00 | 1.265 | 0.115 | 384.0 | 111.0 | 11.55 | |
| 5.5 | 7 | 0.561 | 13.25 | 1.045 | 0.113 | 321.0 | 83.8 | 9.16 | |
| WT-26-094 | 5.5 | 7 | 0.195 | 10.75 | 1.100 | 0.101 | 162.5 | 51.9 | 5.95 |
| 7 | 8.5 | 0.425 | 9.83 | 1.475 | 0.144 | 259.0 | 83.6 | 14.50 | |
| 8.5 | 10 | 0.391 | 8.96 | 1.095 | 0.123 | 301.0 | 76.0 | 10.25 | |
| 10 | 11.5 | 0.489 | 9.75 | 1.175 | 0.136 | 242.0 | 86.6 | 10.40 | |
| 11.5 | 13 | 0.469 | 10.15 | 1.665 | 0.151 | 267.0 | 73.3 | 15.00 | |
| WT-26-096 | 7 | 8.5 | 0.592 | 10.85 | 1.185 | 0.134 | 252.0 | 99.3 | 11.15 |
| 8.5 | 10 | 0.357 | 8.58 | 0.699 | 0.098 | 230.0 | 90.4 | 8.08 | |
| 10 | 11.5 | 0.442 | 9.68 | 0.863 | 0.112 | 256.0 | 95.0 | 9.27 | |
| 11.5 | 13 | 0.360 | 8.68 | 0.751 | 0.100 | 259.0 | 88.8 | 8.82 | |
| 13 | 14.5 | 0.482 | 12.20 | 0.961 | 0.104 | 328.0 | 98.3 | 9.59 | |
| 14.5 | 16 | 0.482 | 12.55 | 0.667 | 0.095 | 293.0 | 91.1 | 7.18 | |
| 16 | 18.65 | 0.576 | 13.15 | 0.646 | 0.102 | 301.0 | 98.0 | 7.17 | |
| WT-26-097 | 10.15 | 11.65 | 0.355 | 10.60 | 1.050 | 0.133 | 341.0 | 96.0 | 11.60 |
Table Note: Assay results by ALS Laboratory methods ME-MS61, Au-ICP21 (for gold) and Zn-OG62 (for Zn>1%). * Zinc results >1% Zn by method Zn-OG62, Zn <1% by method ME-MS61.
Table 2: Winston Tailings Supplementary Sample Assay Results
| Vibracore | Vertical Depth (m) | Au | Ag | Zn* | Cu | Co | Ga | In | |
|---|---|---|---|---|---|---|---|---|---|
| Hole ID | From | To | (g/t) | (g/t) | (%) | (%) | (ppm) | (ppm) | (ppm) |
| WT-26-006 | 0.73 | 8.27 | 0.456 | 11.65 | 1.525 | 0.121 | 266.0 | 85.9 | 12.35 |
| WT-26-010 | 10.71 | 13.31 | 0.379 | 8.75 | 2.020 | 0.116 | 237.0 | 92.6 | 14.90 |
| WT-26-016 | 7.77 | 9.27 | 0.435 | 11.05 | 2.810 | 0.191 | 271.0 | 89.3 | 21.90 |
| WT-26-017 | 9.27 | 10.77 | 0.374 | 13.75 | 3.520 | 0.244 | 308.0 | 98.8 | 27.90 |
| WT-26-022 | 6.67 | 9.27 | 0.520 | 10.60 | 2.380 | 0.157 | 230.0 | 77.0 | 15.55 |
| 9.27 | 9.53 | 0.668 | 14.05 | 5.190 | 0.258 | 278.0 | 79.8 | 39.50 | |
| WT-26-023 | 6.27 | 7.77 | 0.736 | 12.55 | 1.210 | 0.127 | 304.0 | 83.9 | 10.15 |
| 7.77 | 9.27 | 0.534 | 11.60 | 2.260 | 0.171 | 284.0 | 93.1 | 19.55 | |
| WT-26-029 | 0.73 | 1.03 | 0.136 | 7.76 | 1.165 | 0.116 | 230.0 | 69.6 | 9.78 |
| 13.4 | 15.9 | 0.456 | 6.03 | 0.066 | 211.0 | 55.3 | 6.74 | ||
| WT-26-035 | 1.05 | 1.35 | 0.440 | 11.10 | 1.205 | 0.102 | 367.0 | 95.1 | 12.30 |
| WT-26-037 | 12.12 | 15.12 | 0.704 | 13.10 | 1.315 | 0.125 | 279.0 | 106.0 | 11.10 |
| 15.12 | 17.72 | 0.489 | 10.50 | 1.245 | 0.106 | 307.0 | 91.0 | 10.40 | |
| WT-26-039 | 10.17 | 12.67 | 0.598 | 12.85 | 1.345 | 0.115 | 324.0 | 92.2 | 11.70 |
| 12.67 | 15.27 | 0.799 | 13.40 | 1.230 | 0.117 | 306.0 | 87.6 | 10.10 | |
| WT-26-040 | 10.67 | 12.17 | 0.479 | 9.93 | 0.699 | 0.097 | 241.0 | 71.9 | 5.99 |
| 12.17 | 14.77 | 0.455 | 9.96 | 1.055 | 0.106 | 344.0 | 84.9 | 9.21 | |
| WT-26-041 | 15.96 | 17.46 | 0.439 | 12.10 | 1.475 | 0.115 | 370.0 | 87.8 | 12.00 |
| WT-26-043 | 12.85 | 15.45 | 0.554 | 12.05 | 0.917 | 0.123 | 313.0 | 99.3 | 9.58 |
| WT-26-044 | 15 | 16 | 0.423 | 12.25 | 0.994 | 0.139 | 420.0 | 100.5 | 12.35 |
| 16 | 18.6 | 0.329 | 12.10 | 2.190 | 0.151 | 421.0 | 95.0 | 18.75 | |
| WT-26-045 | 14.44 | 15.19 | 0.327 | 9.47 | 1.115 | 0.106 | 382.0 | 90.7 | 10.00 |
| WT-26-046 | 12.54 | 14.54 | 0.368 | 12.70 | 1.385 | 0.154 | 455.0 | 97.9 | 13.45 |
| 14.54 | 17.14 | 0.369 | 14.45 | 2.010 | 0.161 | 443.0 | 100.5 | 19.85 | |
| WT-26-047 | 15.4 | 16.9 | 0.396 | 12.00 | 1.340 | 0.131 | 379.0 | 101.5 | 12.60 |
| 16.9 | 19.5 | 0.356 | 12.80 | 1.305 | 0.126 | 457.0 | 94.6 | 12.55 | |
| WT-26-048 | 18 | 20.6 | 0.235 | 10.95 | 1.635 | 0.139 | 418.0 | 101.5 | 14.75 |
| WT-26-061 | 14.3 | 16.9 | 0.512 | 10.35 | 1.205 | 0.111 | 371.0 | 101.0 | 10.75 |
| WT-26-063 | 15 | 17.6 | 0.565 | 10.55 | 1.085 | 0.097 | 330.0 | 87.8 | 9.00 |
| WT-26-064 | 13.83 | 16.43 | 0.535 | 11.95 | 1.375 | 0.129 | 328.0 | 81.7 | 10.75 |
| WT-26-066 | 10 | 13 | 0.410 | 8.57 | 0.903 | 0.074 | 350.0 | 88.7 | 6.87 |
| 13 | 15.5 | 0.469 | 10.50 | 2.050 | 0.105 | 302.0 | 73.5 | 12.45 | |
| WT-26-067 | 7 | 8.5 | 0.533 | 14.05 | 0.903 | 0.122 | 348.0 | 106.0 | 9.28 |
| WT-26-068A | 7.35 | 9.85 | 0.520 | 13.30 | 1.290 | 0.119 | 352.0 | 96.5 | 11.70 |
| WT-26-070A | 0.66 | 0.96 | 0.304 | 8.38 | 1.260 | 0.113 | 241.0 | 71.8 | 10.85 |
| WT-26-072 | 0.67 | 0.97 | 0.389 | 8.04 | 0.823 | 0.112 | 320.0 | 75.3 | 8.05 |
| WT-26-074 | 1 | 1.3 | 0.303 | 12.80 | 1.825 | 0.171 | 296.0 | 107.5 | 17.85 |
| WT-26-075 | 0.82 | 1.12 | 0.551 | 8.78 | 1.990 | 0.180 | 187.0 | 94.4 | 18.25 |
| 14 | 15.5 | 0.320 | 9.14 | 2.410 | 0.119 | 318.0 | 90.1 | 20.70 | |
| WT-26-076 | 0.88 | 1.18 | 0.774 | 10.75 | 2.680 | 0.236 | 326.0 | 69.8 | 26.70 |
| WT-26-077 | 0.77 | 1.07 | 0.628 | 17.15 | 1.360 | 0.151 | 324.0 | 76.1 | 11.65 |
| WT-26-078 | 75 | 1.05 | 0.446 | 12.60 | 1.460 | 0.184 | 343.0 | 79.6 | 12.00 |
| WT-26-079 | 0.72 | 1.02 | 0.322 | 7.78 | 1.370 | 0.151 | 253.0 | 96.1 | 12.80 |
| WT-26-080 | 0.95 | 1.25 | 0.235 | 7.32 | 1.815 | 0.085 | 191.5 | 70.7 | 13.55 |
| WT-26-082 | 0.94 | 1.24 | 0.328 | 10.35 | 1.555 | 0.161 | 311.0 | 92.3 | 14.55 |
| 7.6 | 10.1 | 0.264 | 14.70 | 3.180 | 0.236 | 270.0 | 93.9 | 24.50 | |
| WT-26-083 | 0.7 | 1 | 0.814 | 15.40 | 0.981 | 0.140 | 348.0 | 88.0 | 9.07 |
| WT-26-084 | 0.59 | 0.89 | 0.349 | 8.13 | 1.195 | 0.123 | 183.0 | 64.6 | 8.82 |
| WT-26-085 | 0.64 | 0.94 | 0.964 | 23.60 | 2.560 | 0.213 | 620.0 | 141.0 | 31.00 |
| WT-26-086A | 0.75 | 1.05 | 0.810 | 15.10 | 0.834 | 0.136 | 285.0 | 93.2 | 8.47 |
| WT-26-087 | 0.75 | 1.05 | 1.015 | 16.40 | 2.140 | 0.198 | 253.0 | 95.3 | 18.70 |
| WT-26-088 | 0.82 | 1.12 | 0.853 | 23.10 | 1.745 | 0.216 | 590.0 | 122.0 | 24.80 |
| WT-26-089 | 0.69 | 0.99 | 0.492 | 9.15 | 1.600 | 0.141 | 314.0 | 69.1 | 12.65 |
| WT-26-090 | 0.64 | 0.94 | 0.450 | 9.89 | 1.380 | 0.116 | 287.0 | 81.7 | 12.55 |
| WT-26-091 | 0.73 | 1.03 | 0.328 | 11.80 | 0.760 | 0.157 | 360.0 | 95.4 | 10.90 |
| WT-26-092 | 0.7 | 1 | 0.243 | 12.40 | 0.806 | 0.125 | 328.0 | 101.5 | 10.05 |
| WT-26-094 | 10.5 | 13 | 0.550 | 11.35 | 1.520 | 0.145 | 276.0 | 90.3 | 13.20 |
| WT-26-095 | 12 | 14.5 | 0.558 | 12.00 | 0.740 | 0.099 | 371.0 | 93.2 | 6.54 |
| WT-26-101 | 8.9 | 11.5 | 0.242 | 8.38 | 1.155 | 0.155 | 234.0 | 67.5 | 8.43 |
| WT-26-106 | 16 | 18.75 | 0.181 | 10.10 | 1.520 | 0.129 | 353.0 | 94.8 | 14.50 |
| WT-26-109 | 14 | 16 | 0.234 | 18.40 | 1.540 | 0.138 | 219.0 | 74.2 | 13.85 |
Table Note: Assay results by ALS Laboratory methods ME-MS61, Au-ICP21 (for gold) and Zn-OG62 (for Zn>1%). * Zinc results >1% Zn by method Zn-OG62, Zn <1% by method ME-MS61.
Analytical Methods
Figure 1: Winston Tailings 2026 Vibracore Sample Result Locations for this Announcement
Table 3: Vibracore Sample Collar Locations and Tailings Depths
| WT-26-001 | 5424415 | 473016 | 464.1 | 0.7 | 6.6 | 5.9 |
| WT-26-002 | 5424415 | 473042 | 463.8 | 1.3 | 5.5 | 4.2 |
| WT-26-003 | 5424415 | 473091 | 463.4 | 1.1 | 9.3 | 8.2 |
| WT-26-004 | 5424415 | 473141 | 463.3 | 0.9 | 14.0 | 13.1 |
| WT-26-005 | 5424414 | 473191 | 464.0 | 1.0 | 6.9 | 5.9 |
| WT-26-006 | 5424414 | 473241 | 463.4 | 0.7 | 8.3 | 7.5 |
| WT-26-007 | 5424364 | 473215 | 463.2 | 0.8 | 10.3 | 9.5 |
| WT-26-009 | 5424364 | 473115 | 463.3 | 0.6 | 10.8 | 10.2 |
| WT-26-010 | 5424364 | 473165 | 463.7 | 0.6 | 13.3 | 12.7 |
| WT-26-011 | 5424315 | 473090 | 464.4 | 0.6 | 3.1 | 2.5 |
| WT-26-011A | 5424315 | 473094 | 463.3 | 0.6 | 3.1 | 2.4 |
| WT-26-012 | 5424315 | 473140 | 463.7 | 0.5 | 11.7 | 11.2 |
| WT-26-013 | 5424314 | 473191 | 463.4 | 0.6 | 7.8 | 7.2 |
| WT-26-014 | 5424313 | 473235 | 464.2 | 0.6 | 4.3 | 3.7 |
| WT-26-015 | 5424263 | 473215 | 462.9 | 0.6 | 6.3 | 5.7 |
| WT-26-016 | 5424263 | 473166 | 462.8 | 0.6 | 10.7 | 10.0 |
| WT-26-017 | 5424264 | 473115 | 462.8 | 0.7 | 11.4 | 10.7 |
| WT-26-018 | 5424264 | 473065 | 462.8 | 0.6 | 4.1 | 3.5 |
| WT-26-020 | 5424214 | 473141 | 462.8 | 0.7 | 9.6 | 8.9 |
| WT-26-021 | 5424214 | 473190 | 463.7 | 0.6 | 5.7 | 5.1 |
| WT-26-022 | 5424161 | 473167 | 462.9 | 0.8 | 9.5 | 8.8 |
| WT-26-023 | 5424113 | 473191 | 463.0 | 0.7 | 9.6 | 8.9 |
| WT-26-024 | 5424062 | 473215 | 464.4 | 0.7 | 5.7 | 5.0 |
| WT-26-025 | 5424013 | 473191 | 461.3 | 1.2 | 2.7 | 1.5 |
| WT-26-026 | 5424064 | 473165 | 462.1 | 0.8 | 6.6 | 5.8 |
| WT-26-027 | 5424464 | 473215 | 462.8 | 0.9 | 9.5 | 8.6 |
| WT-26-028 | 5424465 | 473165 | 462.5 | 0.8 | 6.3 | 5.5 |
| WT-26-029 | 5424465 | 473115 | 463.6 | 0.7 | 15.9 | 15.2 |
| WT-26-030 | 5424463 | 473065 | 462.6 | 0.7 | 11.1 | 10.4 |
| WT-26-031 | 5424463 | 473015 | 463.2 | 0.9 | 12.7 | 11.8 |
| WT-26-032 | 5424464 | 472966 | 462.4 | 2.0 | 10.5 | 8.5 |
| WT-26-033 | 5424513 | 472940 | 463.2 | 1.7 | 7.4 | 5.6 |
| WT-26-034 | 5424514 | 472989 | 462.6 | 1.2 | 16.3 | 15.1 |
| WT-26-035 | 5424515 | 473041 | 462.7 | 1.1 | 14.2 | 13.1 |
| WT-26-036 | 5424514 | 473092 | 463.2 | 1.2 | 11.4 | 10.2 |
| WT-26-037 | 5424513 | 473140 | 462.9 | 1.1 | 17.7 | 16.7 |
| WT-26-038 | 5424564 | 473116 | 463.4 | 1.2 | 13.1 | 11.9 |
| WT-26-039 | 5424565 | 473065 | 463.6 | 1.3 | 15.3 | 14.0 |
| WT-26-040 | 5424565 | 473018 | 463.8 | 1.6 | 14.8 | 13.2 |
| WT-26-041 | 5424563 | 472969 | 463.5 | 2.8 | 17.5 | 14.7 |
| WT-26-042 | 5424565 | 472913 | 463.0 | 3.1 | 10.6 | 7.5 |
| WT-26-043 | 5424613 | 472889 | 464.0 | 5.0 | 15.5 | 10.5 |
| WT-26-044 | 5424612 | 472944 | 463.6 | 4.6 | 18.6 | 14.0 |
| WT-26-045 | 5424613 | 472991 | 463.5 | 2.5 | 15.2 | 12.7 |
| WT-26-046 | 5424613 | 473042 | 463.9 | 1.7 | 17.1 | 15.4 |
| WT-26-047 | 5424665 | 472911 | 463.4 | 6.9 | 19.5 | 12.6 |
| WT-26-048 | 5424664 | 472966 | 463.7 | 3.9 | 20.6 | 16.8 |
| WT-26-049 | 5424663 | 473016 | 462.7 | 2.5 | 14.7 | 12.2 |
| WT-26-050 | 5424713 | 472991 | 463.7 | 2.1 | 13.5 | 11.4 |
| WT-26-051 | 5424714 | 472940 | 463.5 | 6.4 | 19.6 | 13.2 |
| WT-26-052 | 5424713 | 472890 | 463.8 | 6.7 | 17.2 | 10.5 |
| WT-26-053 | 5424765 | 472869 | 463.2 | 10.0 | 16.7 | 6.7 |
| WT-26-054 | 5424765 | 472916 | 462.1 | 9.6 | 16.9 | 7.3 |
| WT-26-055 | 5424765 | 472959 | 462.8 | 8.6 | 15.2 | 6.6 |
| WT-26-056 | 5424815 | 472841 | 462.6 | 11.8 | 15.0 | 3.2 |
| WT-26-057 | 5424865 | 472889 | 463.0 | 11.5 | 20.5 | 9.0 |
| WT-26-060 | 5424614 | 473085 | 462.6 | 1.4 | 15.0 | 13.6 |
| WT-26-061 | 5424537 | 473135 | 462.6 | 1.7 | 16.9 | 15.2 |
| WT-26-062 | 5424541 | 473086 | 463.3 | 1.5 | 9.5 | 8.1 |
| WT-26-063 | 5424539 | 473040 | 463.4 | 1.5 | 17.6 | 16.1 |
| WT-26-064 | 5424538 | 472990 | 463.0 | 1.8 | 16.4 | 14.7 |
| WT-26-065 | 5424540 | 472941 | 463.0 | 3.6 | 8.5 | 5.0 |
| WT-26-066 | 5424489 | 472992 | 462.9 | 0.9 | 15.5 | 14.6 |
| WT-26-067 | 5424488 | 473040 | 464.6 | 0.9 | 10.0 | 9.1 |
| WT-26-068A | 5424489 | 473098 | 464.2 | 1.1 | 9.9 | 8.8 |
| WT-26-069 | 5424437 | 473191 | 464.5 | 0.9 | 8.0 | 7.1 |
| WT-26-070A | 5424433 | 473140 | 463.1 | 0.7 | 4.0 | 3.3 |
| WT-26-071A | 5424439 | 473089 | 464.7 | 0.8 | 11.5 | 10.7 |
| WT-26-072 | 5424439 | 473041 | 463.0 | 0.7 | 7.0 | 6.3 |
| WT-26-074 | 5424390 | 473190 | 463.2 | 1.0 | 8.4 | 7.4 |
| WT-26-075 | 5424391 | 473141 | 463.5 | 0.8 | 15.5 | 14.7 |
| WT-26-076 | 5424392 | 473090 | 463.7 | 0.9 | 8.0 | 7.1 |
| WT-26-077 | 5424389 | 473041 | 464.0 | 0.8 | 5.5 | 4.7 |
| WT-26-078 | 5424339 | 473089 | 463.8 | 0.8 | 4.0 | 3.3 |
| WT-26-079 | 5424338 | 473141 | 463.4 | 0.7 | 7.0 | 6.3 |
| WT-26-080 | 5424338 | 473190 | 463.1 | 1.0 | 8.5 | 7.6 |
| WT-26-082 | 5424288 | 473191 | 463.2 | 0.9 | 10.1 | 9.2 |
| WT-26-083 | 5424238 | 473190 | 463.0 | 0.7 | 7.0 | 6.3 |
| WT-26-084 | 5424188 | 473190 | 462.8 | 0.6 | 7.0 | 6.4 |
| WT-26-085 | 5424140 | 473191 | 463.8 | 0.6 | 10.0 | 9.4 |
| WT-26-086A | 5424081 | 473191 | 462.9 | 0.8 | 5.5 | 4.8 |
| WT-26-087 | 5424038 | 473190 | 463.5 | 0.8 | 4.0 | 3.3 |
| WT-26-088 | 5424190 | 473142 | 463.8 | 0.8 | 5.3 | 4.4 |
| WT-26-089 | 5424242 | 473088 | 463.2 | 0.7 | 7.4 | 6.7 |
| WT-26-090 | 5424239 | 473140 | 463.4 | 0.6 | 9.0 | 8.3 |
| WT-26-091 | 5424289 | 473090 | 463.4 | 0.7 | 3.7 | 3.0 |
| WT-26-092 | 5424289 | 473140 | 463.5 | 0.7 | 7.0 | 6.3 |
| WT-26-093 | 5424590 | 473091 | 463.5 | 1.4 | 8.5 | 7.1 |
| WT-26-094 | 5424590 | 473042 | 462.5 | 1.9 | 13.0 | 11.1 |
| WT-26-095 | 5424589 | 472991 | 463.0 | 1.7 | 14.5 | 12.9 |
| WT-26-096 | 5424590 | 472941 | 463.2 | 4.1 | 18.7 | 14.6 |
| WT-26-097 | 5424590 | 472892 | 463.4 | 6.1 | 11.7 | 5.6 |
| WT-26-098 | 5424638 | 472890 | 463.6 | 2.4 | 8.5 | 6.1 |
| WT-26-099 | 5424638 | 472940 | 463.3 | 5.2 | 18.7 | 13.4 |
| WT-26-100 | 5424638 | 472991 | 463.6 | 1.9 | 14.5 | 12.7 |
| WT-26-101 | 5424639 | 473040 | 463.5 | 1.5 | 11.5 | 10.0 |
| WT-26-102 | 5424690 | 472990 | 462.6 | 2.2 | 13.1 | 10.9 |
| WT-26-103A | 5424688 | 472943 | 462.4 | 7.1 | 14.8 | 7.8 |
| WT-26-104 | 5424739 | 472983 | 463.4 | 5.3 | 13.9 | 8.7 |
| WT-26-105 | 5424739 | 472938 | 463.3 | 8.4 | 19.9 | 11.5 |
| WT-26-106 | 5424739 | 472892 | 463.6 | 16.0 | 18.8 | 2.8 |
| WT-26-107 | 5424789 | 472840 | 463.3 | 10.9 | 15.9 | 5.0 |
| WT-26-108 | 5424840 | 472863 | 463.2 | 11.3 | 16.0 | 4.7 |
| WT-26-109 | 5424740 | 472841 | 463.0 | 14.0 | 16.0 | 2.0 |
| WT-26-008* | 5424364 | 473065 | 463.7 | 0.9 | 1.8 | 0.9 |
| WT-26-008A* | 5424364 | 473066 | 463.7 | 0.6 | 0.6 | 0.0 |
| WT-26-019* | 5424213 | 473091 | 463.0 | 0.7 | 2.1 | 1.4 |
| WT-26-081* | 5424340 | 473221 | 462.8 | - | - | - |
| WT-26-081A* | 5424341 | 473222 | 463.3 | - | - | - |
Table Note: UTM Zone 16N NAD83 Datum. WT-26-011A drilled to test for a suspected false bottom encountered in WT-26-011. Table includes statistics for all Vibracore holes. Batch 6 and Supplementary Sample Vibracore Hole IDs shown bold. * Apparent tailings thickness and vertical profile tested by assays may differ. Depth figures rounded to 1 decimal place. Depth to tailings of WT-26-001 amended from 0.6m to 0.7m. * Vibracore holes WT-26-008/8A, WT-26-019 and WT-26-081/081A were not assayed due to nil sample recovery or the hole entering straight into gravel (WT-26-081/081A).
The MRE is an integral part of the process to advance the Winston Tailing Project towards a cashflow proposition and will be based upon the resource sampling programme, mineralogical and metallurgical testwork and associated studies. The MRE work will also provide inputs into the Application for Recovery of Minerals Permit (the "Recovery Permit") process as announced 1 September 2025.7, 8, 9
Background
Figure 2: Existing Infrastructure at Winston Tailings Storage Facility
References
- Panther Metals PLC, announcement, Winston Tailings Project: Batch 2 Assay Results, dated 19 March 2026 ( https://polaris.brighterir.com/public/panther_metals/news/rns/story/w6jpjkx )
- Panther Metals PLC, announcement, Winston Tailings Project: Batch 3 Assay Results, dated 14 April 2026 ( https://polaris.brighterir.com/public/panther_metals/news/rns/story/wvyzp0w )
- Panther Metals PLC, announcement, Winston Tailings Project: Batch 4 Assay Results, dated 28 April 2026 ( https://polaris.brighterir.com/public/panther_metals/news/rns/story/xe41yjw )
- Panther Metals PLC, announcement, Winston Tailings Project: Batch 5 Assay Results, dated 11 May 2026 ( https://polaris.brighterir.com/public/panther_metals/news/rns/story/rmgeq2r )
( https://polaris.brighterir.com/public/panther_metals/news/rns/story/x20od6r )
On 9 February 2026 Panther announced plans for an approximately 2,000-metre diamond drilling program at the Wishbone Prospect, following the grant of an Exploration Permit in June 2024 valid through 2027. Previous work confirmed compelling VMS-style mineralisation, including 27.3m of massive sulphide and 51m of sulphide-dominated mineralisation across multiple lenses, supported by high-grade copper anomalies in lake sediments.
In July 2024, Panther secured an Exploration Permit for Awkward West, enabling up to 31 drill holes. Historic drilling returned 27.2m at 2.25% TGC, with zones exceeding 5% TGC, alongside indications of nickel, copper, and platinum group elements, aligning with the Company's critical minerals strategy.
Winston Tailings Project - Tailings Evaluation and MRE Pathway
Dotted Lake Project - Hemlo-Adjacent Polymetallic Opportunity
Commercial Strategy - Focused Value Creation
Cleaned text: letterheads, contacts and legal notices removed. View the original announcement ↗ · Company filings. Not investment advice.