Tower Begins Drilling At Rabbit North Following Logistical Delays

June 03, 2026 7:30 AM EDT | Source: Tower Resources Ltd.

Vancouver, British Columbia--(Newsfile Corp. - June 3, 2026) - Tower Resources Ltd. (TSXV: TWR) (" Tower " or the " Company ") is pleased to report that the drilling program previously scheduled for late April (see April 23, 2026 press release ) to advance the Company's major orogenic Au discovery on its Rabbit North property near Kamloops, B.C. (see Fig. 1) is now underway following logistical delays related to the unusually high level of exploration activity in the province.

Thunder – Blue Sky Trend: A Long, Mesothermal Orogenic Au Structure

Tower is currently focusing its drilling at Rabbit North on untested segments of the Thunder-Blue Sky trend, an ENE trending, gold-rich, mesothermal orogenic structure that the Company discovered in 2023 and has traced by drilling and till gold grain sampling for 2.7 km (see Fig. 1). Only 600 metres of the structure have been drilled to date, and every hole crossing it has returned a long and/or high-grade Au intersection (see Fig. 2). The present program will test an additional 400 m of the structure.

Expected Deep Au Potential

With 2.1 km of the Thunder – Blue Sky structure not yet tested, the Company is still focused on the top 250 metres. However, orogenic Au systems are generally subvertical and run much deeper than porphyry and epithermal systems (see Fig. 3) because the Au-scavenging fluids originate in the mantle and rise through thick, accreted continental crust (see Figs. 3b, c) rather than thin oceanic crust (see Fig. 3a), stripping Au from the crustal rocks and precipitating it within 10 km of surface as they flow through the 2 to 3 km thick mesothermal temperature-pressure window (see Fig. 3c). As a result, the depths of mesothermal Au deposits commonly reach 2 to 3 km and in many cases are greater than their lengths.

Many of the world's top Au deposits are of this type irrespective of their ages. They include the 2 to 3 km deep mines at Timmins and Kirkland in the Archean Abitibi greenstone belt and the much younger (Cretaceous) Bralone deposit in B.C. which was mined to 1.9 km, yielded 4.1 Moz of Au at a very high average grade of 0.5 opt, and remains open at depth. While the Thunder - Blue Sky structure is notable for its exceptional 2.7 km length and has consistently yield strong gold grades over attractive widths from shallow drilling, its full potential is expected to be realized at depth.

Current Drilling Focused on Two Untested Gaps in the Thunder – Blue Sky Trend

As explained in the April 23 press release, approximately ten holes are planned, mainly to extend the Thunder gold zone southwest toward the Durand Creek Fault and partially close the untested gap between the Thunder North and Blue Sky zones (see Fig. 2).

The first hole, No. 074 on the Thunder zone, has intersected at least two strongly deformed and pyritized intervals (see Fig. 4) typical of both this zone and Thunder North.

A planned extension to Hole 073, which was started at Thunder North at the end of the December 2025 drilling program, has been deferred until a study of current access restrictions along a seasonal creek in this area has been completed. Drilling closer to the creek should then be possible, allowing for shorter and better placed holes in the Company's next drilling program.

Methods and Qualified Person

The technical content of this news release has been reviewed and approved by Stuart Averill, P.Geo., a director of the Company and a Qualified Person as defined by National Instrument 43-101.

About Tower Resources

Tower is a Canadian based mineral exploration company focused on the discovery and advancement of economic mineral projects in the Americas. The Company's key exploration assets, all in B.C., are the Rabbit North orogenic gold and porphyry copper-gold project located between the New Afton copper-gold and Highland Valley copper mines in the Kamloops mining district, the Nechako porphyry-associated gold-silver project near Artemis' Blackwater project and the More Creek epithermal gold project on the critical "red line" structural zone connecting the mineral deposits of the Golden Triangle.

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