Brightstar’s Lord Byron MRE lift: design and pit optimisation notes for mine teams
Reviewed by Tom Sullivan

First reported on Australian Mining
30 Second Briefing
Brightstar Resources has reported positive drilling results and a modest mineral resource estimate (MRE) increase at its Lord Byron gold deposit in Western Australia, strengthening confidence in extending mine life within the Laverton gold project. The updated MRE, derived from recent reverse circulation and diamond drilling, refines grade continuity and mineralisation geometry around existing pit shells, improving pit optimisation and potential ore reserve conversion. For mine planners and geotechs, the tighter model supports more reliable slope design, scheduling, and cutback decisions in a mature brownfields setting.
Technical Brief
- New data tighten wireframe interpretations of mineralised lodes, reducing local grade smearing between high‑ and low‑grade domains.
- Updated geological model better constrains oxide–transition–fresh boundaries, important for blast design and digability assumptions.
- Refined mineralisation geometry supports more accurate geotechnical domaining for slope stability assessments in weathered versus fresh rock.
- Closer drill spacing around pit shells reduces reliance on geostatistical extrapolation, lowering uncertainty in local block estimates.
- For similar mature mining pits, incremental MRE refinements can materially influence pushback economics and closure sequencing.
Our Take
Western Australia dominates our Mining–Projects coverage, and incremental resource upgrades like this at the Lord Byron deposit typically act as low-cost de-risking steps ahead of any decision to commit to larger drilling or feasibility work.
In our database, several WA gold and base-metal deposits have used ‘modest’ MRE uplifts to justify extensions of existing mine plans rather than entirely new builds, which often leads operators to focus on optimising existing infrastructure rather than chasing step-change scale.
Although Brightstar Resources does not yet feature heavily across the 548 Mining stories logged, WA project stories tagged as ‘Projects’ often precede capital-raising or JV discussions, so even small confidence gains at Lord Byron may be strategically useful in future funding narratives.
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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