Eastfield Resources Provides Corporate Update and Reviews Exploration Activities

Vancouver, B.C. — October 31, 2025 — Leads & Copy — Eastfield Resources Ltd. (TSX-V: ETF) has provided a corporate review and update on current exploration activities.

Eastfield Resources Ltd., a Tier 1 issuer on the TSX Venture Exchange since 1987, focuses on precious and base metals exploration across Western Canada and the Western United States. The company currently holds five copper- and/or gold-focused projects in British Columbia.

The company's principal asset, the 100%-owned Zymo Copper-Gold Porphyry Project near Smithers, British Columbia, covers 18,184 hectares. Acquired in 2007 and fully optioned in 2012, Zymo has seen over $4.9 million in exploration expenditures. A significant 8+ km by 2 km induced polarization (IP) anomaly outlines a copper-gold porphyry system. To date, 34 diamond drill holes (10,810 metres) have been completed.

Mineralization occurs in porphyritic diorites and adjacent sediments exhibiting strong potassic alteration. Five mineralized zones have been identified. Significant drill results include:

ZY08-09: 0.23% Cu and 0.32 g/t Au over 252 m, including 0.44% Cu and 0.32 g/t Au over 159 m and 0.72% Cu and 0.55 g/t Au over 72 m;

ZY08-10: 0.31% Cu and 0.21 g/t Au over 159 m;

ZY11-20: 0.28% Cu and 0.34 g/t Au over 126 m.

Peripheral precious-metal veins have also returned up to 10.78 g/t Au with several percent lead and zinc. Numerous IP targets remain untested, and no deep holes have been completed to date. The property features flat terrain with shallow overburden and excellent access via logging roads. In December 2024, Eastfield was granted a five-year exploration permit authorizing 50 drill sites and 50 km of geophysical surveying. A 2025 field program of grid expansion and line-cutting is underway in preparation for a 2026 IP survey.

In September 2025, Eastfield completed a private placement financing of $1.0 million.

Glen Garratt, P. Geo., Director

Source: Eastfield Resources Ltd.