Catalyst lifts Trident gold reserves 32%: mine design and scheduling notes for engineers
Reviewed by Joe Ashwell

First reported on Australian Mining
30 Second Briefing
Catalyst Metals has lifted underground probable reserves at the Trident deposit by 32 per cent to 524,000oz, now defined as 3.9Mt at 4.2g/t Au, reinforcing feed for its plan to double output across Western Australia’s Plutonic gold belt. The reserve upgrade follows ongoing underground development, supporting longer mine life and scheduling flexibility for Trident as a key ore source. Geotechnical and mine planning teams will need to optimise stope design and sequencing around the higher-grade 4.2g/t inventory to realise the targeted production uplift.
Technical Brief
- Trident is positioned as a primary ore source within Catalyst’s wider Plutonic belt production hub.
Our Take
The Trident reserve lift in Western Australia sits alongside Catalyst Metals’ 280 per cent Mineral Resource increase at the nearby Keillor mine, signalling a broader resource conversion push across its WA gold portfolio rather than a one-off upgrade.
With Catalyst having recently doubled its revolving credit facility to $200 million to fund a multi-mine expansion in WA, higher-grade reserves at the Trident deposit in the Plutonic gold belt are likely to be prioritised in capital allocation and mine scheduling.
Our database shows several 2026 items on Catalyst’s Plutonic operations, including new high-grade zones and the strongest belt-wide output since 2013, so the Trident project’s upgraded underground reserve base strengthens the case for sustained production growth from this belt.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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