Mt Cannindah Resource Jumps 37% to 216.5kt CuEq as Project Definition Advances

Mt Cannindah has moved from a 14.5Mt resource base to 23.2Mt

Cannindah Resources’ previous 2024 Mineral Resource Estimate for the Cannindah Breccia was 14.5Mt at 1.09% CuEq. The September 2026 update lifts the tonnage to 23.2Mt at 0.93% CuEq and contained copper-equivalent metal to 216.5kt.

On those published figures, the defined tonnage has increased by about 60% while contained CuEq metal has increased by 37%. The average CuEq grade is lower than the 2024 estimate because the larger geological interpretation now captures more material around the previous resource envelope, but the overall contained-metal inventory has grown materially.

The company says the new estimate incorporates data from 45 additional drill holes completed between October 2025 and July 2026. That work has improved the density of information across the breccia system and changed both the scale and confidence profile of the model.

The resource now contains a larger copper, gold and silver inventory

Resource intelligence

23.2Mt at 0.53% Cu, 0.37g/t Au and 10.8g/t Ag

The updated estimate reports an average grade of 0.53% copper, 0.37 grams per tonne gold and 10.8 grams per tonne silver. The combined copper-equivalent figure is 0.93% CuEq.

Published summaries of the September estimate put the contained inventory at approximately 121.9kt of copper, 274.3koz of gold and 8.0Moz of silver. The resource is reported inside optimised open-pit shells, with the current shell extending to roughly 330 metres depth.

That open-pit reporting framework is important. It provides a basis for reasonable prospects of economic extraction at the resource-estimation stage, but it is not the same as a reserve, an approved pit design or a production schedule.

Cannindah’s earlier project information records mineralisation extending beyond 1,000 metres downhole. Deeper mineralisation remains a future evaluation area rather than a confirmed underground development case.

About 85% of the updated tonnage is now Measured or Indicated

The confidence split may be as important as the headline tonnage. Around 85% of the updated resource is classified in the Measured and Indicated categories, leaving a smaller proportion in the lower-confidence Inferred category.

Higher classification confidence gives project teams a firmer geological base for mine-planning, metallurgical, geotechnical and economic studies. It does not establish project economics, but it reduces one important uncertainty.

Stage discipline

Confirmed resource growth is not the same as a mine decision

Cannindah continues to test extensions along strike and at depth. Public reporting says assays from eight recent holes outside the current resource were pending when the update was released, while additional drilling is intended to test further growth.

The next step is the technical and commercial work needed to test whether the resource can support a viable operation, including metallurgy, geotechnical analysis, mining and processing studies, infrastructure, environmental assessment, cost estimates, approvals and financing.

None of those downstream workstreams should be treated as a confirmed construction package unless Cannindah formally advances them and releases a procurement pathway.

The next question is how the larger resource translates into a development case

Mt Cannindah sits about 100 kilometres south of Gladstone, giving the project a regional position close to a major industrial and export hub. Cannindah has previously highlighted road access to the project and the presence of existing regional infrastructure as part of its development context.

Those location advantages do not replace detailed project definition. A future development case still needs mining and processing design, waste and tailings strategy, power and water requirements, logistics, environmental controls and an executable approvals pathway.

The September resource update creates a stronger technical input for that work because it expands the defined inventory and increases the proportion in higher-confidence categories. The next meaningful milestones will be evidence that the larger resource is being converted into progressively more detailed study and development decisions.

The contractor signal is future-facing, not a live construction tender

Commercial position

A larger resource can widen future study and delivery requirements

If Cannindah advances through economic studies, potential industry work could broaden across drilling, geotechnical investigation, metallurgy, environmental services, mine and process engineering, infrastructure planning and later civil capability.

At this stage, BBI has not identified a company announcement confirming a mine-construction contract, EPC appointment, major civil award or active construction tender tied to the September resource update.

Suppliers should therefore treat Mt Cannindah as a project-development watch rather than a current construction procurement opportunity. Stronger commercial signals would include formal study appointments, environmental or engineering scopes, supplier-registration pathways, capital estimates, development approvals, financing decisions or FID.

BBI is also tracking Central Queensland copper development signals including QMines’ Botos and Mt Chalmers growth work, alongside broader Queensland critical-minerals developments such as the Mt Carbine–Springer tungsten strategy.

Confirmed now versus what remains conditional

What industry should watch next