Irving Resources Reports High-Grade Gold Hits and Two Active Drill Fronts at Yamagano JV in Kyushu, Japan

Irving Resources has released a drilling update for the Yamagano Joint Venture in Kyushu, Japan, highlighting high-grade gold and silver assay results from completed hole 25SY-003 and progress on the in-progress hole 26SY-001. The JV is a partnership among Newmont Overseas Exploration (60%), Irving Resources (27.5%), and Sumitomo Corporation (12.5%).

Drill hole 25SY-003, a 900.3-metre deep hole completed in late 2025, returned multiple high-grade vein intercepts including 23.36 grams per tonne (gpt) gold and 9.12 gpt silver over 1.0 metre, 10.30 gpt gold and 10.0 gpt silver over 0.5 metre, and 8.91 gpt gold and 31.5 gpt silver over 0.9 metre. These results are consistent with nearby hole 23SY-001, which had previously hit a one-metre vein grading 45.90 gpt gold, and Irving says the new intercepts suggest the East Yamagano vein system may extend and connect westward to the historic Yamagano vein system.

Hole 26SY-001, the easternmost drill test at Yamagano to date, is currently at approximately 400 metres depth and is planned to reach 900 metres. It is targeting a discrete AMT resistive body and is expected to be completed within the first or second quarter of 2026. Irving says early signs of veining and silicification are encouraging.

The company also flagged that the JV Operating Committee is considering a drilling program within the Shimadzu Ltd.-owned Yamagano Mining Right, which lies immediately west of the East Yamagano Exploration Right and encompasses the approximately 400-year-old historic Yamagano Gold Mine. That program could begin in mid-2026, subject to permitting and technical reviews.