Tomingley Drilling Discovers New Mineralisation at McLeans

Executive Summary

• Underground diamond‑core drilling at Tomingley (McLeans and Roswell) intersected multiple high‑grade gold zones, supporting expansion of the Inferred Resources and providing data for conversion to Indicated Resources.
• At McLeans, a newly identified western andesite host yielded intercepts up to 26 m @ 4.36 g/t Au (including 3.3 m @ 22.8 g/t Au).
• At Roswell’s Western Monzodiorite domain, 89 holes (18,064 m) confirmed wide high‑grade zones, e.g., ROSGT001D – 9.3 m @ 3.88 g/t Au and ROSUG440D – 6.5 m @ 8.03 g/t Au plus a 0.9 m @ 37.3 g/t Au interval.

Key Details

• McLeans – Western Andesite (new host)
• MCLUG013D: 26 m @ 4.36 g/t Au from 112 m; 3.3 m @ 22.8 g/t Au from 112.7 m.
• MCLUG012D: 10.7 m @ 2.09 g/t Au from 105 m.
• MCLUG011D: 8 m @ 2.33 g/t Au from 113 m; 0.8 m @ 14.4 g/t Au from 118 m.
• MCLUG007D: 5.2 m @ 1.62 g/t Au (99.9 m); 6.1 m @ 2.65 g/t Au (113 m).

• MCLUG006D: 7.8 m @ 3.46 g/t Au (120 m); 1.0 m @ 10.1 g/t Au (126 m).

• McLeans – Eastern Andesite (existing resource)

• MCLUG012D: 10 m @ 1.31 g/t Au (284 m); 3.7 m @ 1.66 g/t Au (314.1 m).
• MCLUG010D: 0.5 m @ 38.9 g/t Au (332.5 m).
• MCLUG007D: multiple intervals – 8 m @ 2.67 g/t Au (293.2 m), 3.1 m @ 4.52 g/t Au (298.1 m), 8 m @ 4.38 g/t Au (320 m), 2 m @ 12.6 g/t Au (320 m).

• MCLUG005D: 10 m @ 1.54 g/t Au (276 m).

• Roswell – Western Monzodiorite domain

• ROSGT001D: 9.3 m @ 3.88 g/t Au (157.9 m); 1.1 m @ 10.5 g/t Au (same depth); 1.8 m @ 2.05 g/t Au (177.2 m).
• ROSUG050D: 25.6 m @ 1.94 g/t Au (276.1 m).
• ROSUG426D: 24.2 m @ 2.65 g/t Au (115.3 m).
• ROSUG430D: 12.1 m @ 5.44 g/t Au (115.3 m).
• ROSUG440D: 6.5 m @ 8.03 g/t Au (166.5 m); 0.9 m @ 37.3 g/t Au (171.6 m).
• ROSUG442D: 3.9 m @ 12.2 g/t Au (160.1 m); 1.2 m @ 25.4 g/t Au (162 m).
• ROSUG458D: multiple intervals – 16 m @ 1.67 g/t Au (276.4 m), 5 m @ 1.59 g/t Au (304 m), 5 m @ 3.19 g/t Au (316 m), 5.1 m @ 2.82 g/t Au (328 m).
• ROSUG564D: 14 m @ 2.19 g/t Au (119 m); 2.8 m @ 3.94 g/t Au (140.2 m).
• ROSUG572D: 12.4 m @ 3.00 g/t Au (109 m); 0.7 m @ 30.6 g/t Au (115.6 m).
• ROSUG584D: 3.2 m @ 2.04 g/t Au (128 m); 7.9 m @ 14.6 g/t Au (154 m); 1.1 m @ 84.4 g/t Au (154 m).

• ROSUG595D: 3.2 m @ 1.99 g/t Au (158.8 m); 2 m @ 2.02 g/t Au (165 m); 9.5 m @ 4.73 g/t Au (170 m).

• Drilling Program Scope

• McLeans: 9 holes, 3,247 m total; infill spacing reduced to ~40 × 60 m to raise confidence in Inferred Resource.

• Roswell: 89 holes, 18,064 m total; grid spacing ~15 × 20 m targeting conversion of Inferred to Indicated Resources.

• Future Work

• Additional underground drilling planned at Wyoming Three, north‑Caloma extensions, and a deep thrust‑splay target beneath Roswell.
• Surface drilling slated to start November 2025.

Notable Quote

“Most of Tomingley’s deposits are open at depth and along strike. This drilling further demonstrates not only the significant resource expansion potential across the mine site but the potential to discover other deposits.” – Nic Earner, Managing Director, Alkane Resources Ltd.