Altitude Minerals Advances Byrock Drilling and Nevada Exploration Plans

Altitude Minerals Byrock drilling update and Nevada exploration plans

Altitude Minerals Ltd (ASX: ATT) has outlined a detailed exploration and corporate update for July 2026, highlighting the Altitude Minerals Byrock drilling update and Nevada exploration plans across two continents. According to the ASX announcement, the company has completed 1,158 metres of RC drilling at its Byrock copper-gold project, is 100% drill ready at the Firenze silver-gold project, and aims to have the W-Project drill ready by September 2026.

Across these three assets, Altitude Minerals Ltd is progressing copper-gold porphyry targets in Australia alongside low-sulphidation epithermal gold-silver systems in the United States, giving investors clear milestones across the second half of 2026.

A Snapshot of Where Altitude Stands Right Now

The July 2026 exploration and corporate update from Altitude Minerals Ltd summarises the current status of three projects across two continents:

Each project is at a different stage in the exploration cycle, which can provide Altitude Minerals Ltd with staggered news flow as drilling, assays and target definition work progress.

Byrock Project: Drilling Complete and Assays Expected in August

The key operational activity reported for June at the Byrock Project in the northern Macquarie Arc was the completion of 1,158 metres of Reverse Circulation (RC) drilling. According to Altitude Minerals Ltd, this program was designed to test three of the four highest ranked pipe targets at the project.

One pipe target remains untested, with the delay attributed to rain rather than technical or permitting constraints. From an operational standpoint, that target remains available for future drilling when conditions allow.

The program has now advanced into a second phase with a diamond core tail on the P38 target in progress. A diamond core tail involves extending an existing RC hole using diamond drilling to collect continuous core, which can provide more detailed geological and structural information than chip samples alone.

The company plans to:

• Complete drilling of the diamond core tail at the P38 target
• Submit samples from the RC and diamond drilling to the laboratory
• Report assay results, which are expected in August 2026

For investors, the August timeframe for assays represents a clear near-term event. The results are expected to provide the first modern geochemical test of several high-priority pipe targets within this copper-gold porphyry setting.

What Is RC Drilling and Why Use a Diamond Core Tail?

RC drilling is a cost-effective method often used in early-stage exploration. A hammer at the bottom of the hole breaks the rock into small chips, which are then brought to the surface inside the drill pipe using compressed air. These chips are collected in sample bags at defined intervals, such as every 1 metre or 2 metres, and then sent for assay.

Diamond drilling, by contrast, uses a rotating diamond-tipped bit to cut a cylindrical core of rock. This method is more expensive and slower than RC drilling but provides:

• A continuous sample of the rock along the hole
• Better information on structures such as faults, veins, and fractures
• More detailed geological logging and sampling options

A diamond core tail is often used when RC drilling has already tested a target but more detailed information is needed at depth. Altitude Minerals Ltd is applying this approach at the P38 target to refine geological understanding where it considers the target a priority.

Nevada Projects: Fully Permitted and Progressing Toward Drilling

Altitude Minerals Ltd also reports progress across two low-sulphidation (LS) epithermal gold-silver projects in Nevada: the Firenze Project and the W-Project. Furthermore, both projects target structurally controlled precious metal systems and are at or approaching drill-ready status.

Firenze Project: Are the Silver-Gold Targets Ready to Drill?

According to the ASX announcement, Firenze is now 100% drill ready. Key pre-drilling steps have been completed:

• Drill permits issued and bond paid
• Earthworks completed to prepare access and drill pads
• Drill contractor selected

The current plan for Firenze is a 2,600 metre RC drill program, with drilling expected to start after the contractor completes its existing commitments, currently indicated as September or October 2026.

The company also indicates that Firenze is scheduled to be drilled as part of a combined drill program with the W-Project. Combining the programs may allow more efficient use of contractor mobilisation and demobilisation and streamline logistics across both Nevada projects.

W-Project: Geophysics Completed and Fieldwork Scheduled

The W-Project has also advanced its preparation activities. According to Altitude Minerals Ltd, June quarter work included:

• Completion of a Controlled Source Audio-frequency Magnetotellurics (CSAMT) geophysics survey to help refine structural controls on mineralisation
• Selection of a drill contractor for the upcoming program

Final data from the CSAMT survey is still pending. The company's July 2026 plans for the W-Project include:

• Analysing CSAMT and drone magnetics survey data to refine structural interpretations
• Conducting field mapping and rock chip sampling to further define drill targets
• Working toward the objective of being drill ready by September 2026

If this schedule is maintained, a combined RC drilling program across Firenze and the W-Project could consequently commence in the September to October 2026 window.

The July 2026 exploration and corporate update was authorised for release by Duncan Chessell, Managing Director of Altitude Minerals Ltd. The release signals management's focus on advancing both Australian and US assets through clearly defined work programs and staged technical milestones.

Educational Section: Understanding Porphyry and Epithermal Targets

The Altitude Minerals Ltd portfolio covers two distinct mineralisation styles: porphyry copper-gold at Byrock and low-sulphidation epithermal gold-silver at Firenze and the W-Project. Understanding these target types can help investors interpret exploration news and the potential scale of any future discoveries.

Porphyry Copper-Gold Systems (Byrock, NSW)

Porphyry deposits are large geological systems where copper and gold are spread through a broad volume of rock. They form when metal-rich fluids move away from a cooling body of magma at depth and deposit minerals through a network of veins and fractures.

Typical characteristics include:

• Large tonnage, generally lower grade compared with many vein-type deposits
• Extensive alteration zones where the original rock has been chemically changed by hot fluids
• Metal distribution over hundreds of metres both laterally and vertically

Globally, porphyry deposits supply a major share of copper production and a substantial amount of gold. In the Australian context, the Macquarie Arc in New South Wales is recognised as a key porphyry copper-gold province, hosting multiple long-life mining operations.

From an exploration perspective, success in a porphyry environment often depends on:

• Accurately identifying the centre of the system
• Understanding the vertical and horizontal zoning of mineralisation
• Systematic drilling to build a three-dimensional geological model

Altitude Minerals Ltd is applying RC drilling and targeted diamond core work at Byrock to begin building that model and to test the highest ranked pipe targets within this broader porphyry setting.

Low-Sulphidation Epithermal Gold-Silver Systems (Firenze and W-Project, Nevada)

Epithermal deposits form at relatively shallow depths, often in association with volcanic activity and near-surface hot fluid systems. The low-sulphidation subtype is typically characterised by:

• Gold and silver hosted in discrete veins or stockworks
• Strong structural control, where faults and fractures act as pathways for mineralising fluids
• Potential for high grades over narrower widths compared with many porphyry systems

Nevada is regarded as one of the world's leading regions for epithermal and related gold deposits. For Altitude Minerals Ltd, the Firenze and W-Project targets fall into this category, with modern geophysics, mapping and sampling used to identify the structures most likely to host mineralisation.

To summarise the two deposit styles:

Upcoming Catalysts and Work Program Timeline

According to the July 2026 update, Altitude Minerals Ltd has a clearly staged activity schedule for the remainder of the year:

This sequence means potential assay results from Byrock may be reported shortly before or around the time drilling at Firenze and the W-Project is expected to begin. For investors monitoring Altitude Minerals Ltd, this clustering of activity can provide a series of data points across several months.

Investment Perspective: Diversified Exposure and Defined Work Plans

From an investment analysis viewpoint, several elements of the Altitude Minerals Ltd update may be of interest to market participants:

1. Diversification across commodities and jurisdictions

   • Exposure to copper and gold through the Byrock porphyry system in New South Wales
   • Exposure to gold and silver through low-sulphidation epithermal targets in Nevada
   • Operations in two established mining regions with existing infrastructure and exploration history

2. Clear near-term news flow

   • Assay results from Byrock targeted for August 2026
   • Planned commencement of a 2,600 metre RC program at Firenze, combined with drilling at the W-Project, from September or October 2026
   • Ongoing technical updates from geophysics interpretation, mapping and sampling at the W-Project

3. Operational readiness in Nevada

   • At Firenze, key pre-drilling steps such as permits, bonding, earthworks and contractor selection are reported as complete
   • At the W-Project, geophysical data acquisition is completed and interpretive work is scheduled, alongside surface geological work, with a defined target of being drill ready by September

4. Combined drill program approach

   • A joint drill program across Firenze and the W-Project may provide logistical efficiencies, with a single contractor mobilisation expected to service both projects. While cost outcomes are not quantified in the ASX announcement, such an approach is often used in the sector to manage exploration budgets.

Why Altitude Minerals May Warrant Ongoing Investor Attention

Altitude Minerals Ltd is positioned in what can be described as an execution phase across its exploration portfolio. Drilling has already been completed at Byrock with assays in the near term, while both Nevada projects are moving toward initial RC programs.

For investors following ASX-listed explorers, this combination of:

• Defined copper-gold porphyry targets in a known Australian belt
• Drill-ready and near drill-ready gold-silver epithermal targets in Nevada
• A scheduled sequence of technical milestones through the second half of 2026

provides a framework for tracking progress over time.

The July 2026 exploration and corporate update indicates that Altitude Minerals Ltd is advancing multiple projects with clear work plans and near-term milestones across two continents, with assay results at Byrock and initial drilling in Nevada flagged as key events for the coming months.

Glossary of Key Terms

• Altitude Minerals Ltd (ASX: ATT): An ASX-listed mineral exploration company with projects in New South Wales, Australia, and Nevada, USA.
• RC drilling (Reverse Circulation): A drilling technique where rock is broken and returned to surface as chips inside the drill pipe using compressed air. Commonly used for early-stage exploration as it is relatively fast and cost-effective.
• Diamond core tail: An extension of an existing drill hole using diamond drilling to recover a continuous rock core for detailed logging and sampling.
• Porphyry deposit: A large-scale copper-gold deposit type related to intrusive igneous bodies and extensive hydrothermal alteration.
• Low-sulphidation (LS) epithermal: A style of gold-silver deposit formed at shallow depths from relatively cool, low-sulphur fluids, often producing vein-style mineralisation.
• CSAMT (Controlled Source Audio-frequency Magnetotellurics): A geophysical technique that uses an artificial electromagnetic source to measure subsurface electrical resistivity, which can help map geological structures.
• Assay: Laboratory analysis used to determine the concentration of metals in rock or soil samples.
• Pipe target: A pipe-like or cylindrical geological or geophysical feature that may represent a zone of altered or mineralised rock and is selected as a drilling target.

Ready to Follow Altitude Minerals' Exploration Progress Across Two Continents?

With assay results from Byrock expected in August 2026 and a combined RC drill program at Firenze and the W-Project targeting a September/October start, Altitude Minerals Ltd (ASX: ATT) is entering a period of concentrated activity across its copper-gold and gold-silver portfolio. Investors seeking to stay across the company's milestones, project updates, and announcements can visit the Altitude Minerals Investor Centre for the latest information.