Altitude Minerals completed a 1,501-metre drilling program at the Byrock Project in New South Wales, testing three of four priority pipe targets for concealed copper-gold porphyry systems.

The campaign comprised 1,158 metres of reverse-circulation drilling and a 343-metre diamond-core tail on target P38. Rainfall prevented access to the fourth target, which remains untested.

Assays returned no significant copper mineralisation from the reverse-circulation drilling, though hole 26BY04 intersected minor gold, returning 27 metres at 0.06 grams per tonne from a depth of 42 metres. Visual logging of the diamond-core tail in hole 26BY05 indicated no significant base-metal mineralisation.

Altitude expects multi-element assays and gold fire-assay results for the diamond-core tail in the coming weeks. The company conducts exploration at the Byrock Project in collaboration with project partner Nimrod Resources Limited under an earn-in and joint venture agreement.

While the drilling validated the geophysical interpretation of pipe-like bodies, deep crustal-tapping structures, and previously unmapped volcanic rocks, the intersected basaltic and ultramafic rocks appear younger and less fractionated than the targeted felsic igneous rocks. At target P38, drilling intersected a volcanic breccia pipe containing abundant large clasts of the targeted felsic intrusive rocks, which will undergo fertility and prospectivity analysis as part of a broader project review.

Based on the results received to date, the project has not met the company's technical criteria for further drilling expenditure and is being placed under review pending the outstanding diamond-core assays and fertility analysis to determine future involvement.

Altitude plans an upcoming drilling program at the Firenze Project in Nevada in late September 2026, with drill contracts secured, access tracks and pads prepared, and permits approved.

Read the full announcement: Byrock Project Drilling Results