Eagle Plains Completes Work at Newly Assembled Hearne Hill South Project in Highly Prospective Babine Copper-Gold Porphyry District

Executive Summary

• Eagle Plains Resources completed its 2025 field work on the newly assembled Hearne Hill South Copper‑Gold Porphyry Project, including >32 km of soil geochemical sampling and a high‑resolution airborne magnetic survey.
• The property is 4,656 ha, fully owned, road‑accessible, and situated in the prolific Babine Porphyry district near historic Bell and Granisle mines.
• Initial rock grab sample (LWHHR001) shows mineralization with chalcopyrite, malachite staining, chlorite alteration, epidote veinlets and specular hematite; analytical results from the 2025 program are pending.

Key Details

• Property Overview
• Hearne Hill South Project – 4,656 ha in Stikine Terrane, Babine Porphyry Belt, ~70 km NE of Smithers, BC.
• Fully owned by Eagle Plains; no royalties or encumbrances.

• Road‑accessible with nearby hydro transmission lines.

• 2025 Work Program

• Completed >32 line km of soil geochemical sampling at ~50 m spacing on east/west oriented lines (200–800 m apart).
• Collected 12 rock grab samples; notable sample LWHHR001 from fine‑grained granodiorite shows:
  • Malachite staining on fractures, chalcopyrite disseminations and fracture fill.
  • Pervasive chlorite alteration, epidote veinlets, specular hematite.

• Conducted high‑resolution airborne magnetic survey (Precision GeoSurveys Inc.) – 286 line km at 100 m line spacing, completed Jan 2025.

• Data Status

• Analytical results and interpretation of soil geochemistry and magnetic data are pending; to be released after QA/QC review.

• All field work designed and executed by TerraLogic Exploration Inc., Cranbrook, BC.

• Geological Context

• Property lies within Babine Porphyry Belt (Late‑Triassic Takla Group & Early‑Jurassic Hazelton Group) with Tertiary/Cretaceous intrusions.
• Two primary mineralization styles identified regionally:
  1. Stockwork porphyry Cu–Mo associated with biotite‑feldspar porphyry (BFP).
  2. Breccia pipes hosting higher‑grade Cu–Au cores.

• Alteration assemblage includes strong biotite and quartz‑sericite; potassic alteration zones host the highest grades.

• Regional Exploration Activity

• Amarc Resources & Boliden – $10 M budget for 2025 Duke Project.
• American Eagle Gold – 30,000 m planned drilling on NAK project (2025).

• South32 – Acquired 19.9% stake in American Eagle Gold for US$22 M (Nov 2024) to support further drilling.

• Qualified Person

• Technical information reviewed and approved by C.C. Downie, P.Geo., Director & Officer of Eagle Plains (NI 43‑101 Qualified Person).

Notable Quotes

“We are very pleased to have assembled a significant land position in such an endowed porphyry district in just a couple of years.” – Jesse Campbell, Vice President of Exploration.
“The Hearne Hill South Project is another example of our corporate goal to increase porphyry copper and gold discovery exposure in our generative portfolio… I commend the TerraLogic crew on their ability to efficiently execute the work and to identify new mineralization in the first field program.” – Jesse Campbell, Vice President of Exploration.