Hercules Metals Intersects 81 m of 1.5% Copper Within 346 m of 0.66% Copper in First 2025 Drill Hole Completed at the Leviathan Porphyry System in Idaho

Executive Summary

• First hole of the 2025 drill program (HER‑25‑02) intersected high‑grade mineralization: 81 m @ 1.5 % Cu, 8.9 g/t Ag within a larger 127 m @ 1.1 % Cu, 7 g/t Ag zone, all inside a 346 m broader envelope (0.66 % Cu, 3.2 g/t Ag, 78 ppm Mo).
• The intercept extends the strike length of the Leviathan porphyry system to ~1.3 km and supports a new 3‑D geological model that improves targeting efficiency.
• Ongoing MT survey identified a “Donut” conductivity anomaly south of current drilling, prompting additional holes (HER‑25‑16, HER‑25‑22) to test the anomaly.

Key Details

• Hole HER‑25‑02 – 220 m step‑out NE of 2024 hole HER‑24‑12; key intervals:
• 15.5 m @ 1.28 % Cu, 22.8 g/t Ag (high‑grade sub‑interval)
• 126.5 m @ 1.10 % Cu, 7.0 g/t Ag
• 345.9 m @ 0.66 % Cu, 3.2 g/t Ag, 78 ppm Mo (broad envelope)
• Overall drill program status – >11,000 m drilled in 13 completed holes, 5 holes in‑progress, 3 RC pre‑collar holes; only one short abandoned hole (HER‑25‑01).
• Modeling breakthrough – Winter 2024/25 3‑D model of the Leviathan system enabled northwest‑oriented drilling perpendicular to porphyry strike, increasing hit rate.
• Hypogene enrichment – Strong bornite‑chalcocite zones identified at the centre of the system; early mineral porphyry characterized by dense quartz phenocrysts and halo veins.
• MT Survey (August 27 2025) – Large‑scale ground MT survey (>100 km², >6 km depth) revealed a high‑conductivity “Donut” anomaly extending southward for several kilometres; conductivity intensifies toward the Southern Flats zone.
• Drilling of Donut anomaly – Two holes now testing the anomaly: HER‑25‑16 (outer ring <50 Ω·m) and HER‑25‑22 (inner margins). Planned fence to cover full 3 km width.
• Assay methodology – Samples processed at MSA Labs (ISO 17025/9001); IMS‑230 digestion; ICP‑MS/ICP‑ES for 48 elements; QA/QC includes blanks, duplicates, CRMs, and blind inserts.
• Qualified Person – Dillon Hume, P.Geo., VP Exploration, reviewed and approved the technical information per NI 43‑101.

Notable Quotes

“The results from the first hole of Hercules' 2025 drill program show not only strong grades unique to the Leviathan porphyry, but also provide evidence that the secondary hypogene enrichment thickens at the centre of the system.” – Chris Paul, CEO & Director

“Our new MT survey demonstrates a remarkable correlation with drilled mineralization and suggests the potential to extend the system upwards of 5 km in total strike length.” – Chris Paul