Tower Begins Drilling at Rabbit North Following Logistical Delays

About this update from 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...

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