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A thin, high-grade reef can be impressive on paper, but it can also be hard to mine at scale. That’s why we sit down with GreenTech Metals CEO James Rattenbury to talk about a different way to view the Munni Munni platinum group metals system in Western Australia’s West Pilbara: not just the reef, but the wider mineralised zones around it that bring copper and nickel into the story.

We walk through what Green Tech Metals is building across a dominant regional footprint, anchored by two projects only about 10 kilometres apart: Munni Munni (PGE with base metals potential) and Whundo (a high-grade copper-zinc VMS asset with overlooked gold). James explains why commodity prices, mining methods, and development benchmarks have shifted since earlier studies, and how that changes what “historic” data can be worth today. We also unpack the practical work underway, including drilling, resampling preserved legacy core, and QA/QC designed to support a JORC 2012 mineral resource estimate targeted for the June quarter.

From there, we look ahead to the 2026 catalyst timeline: Money Money’s re-estimated resource in late June, Whundo’s update by August, drilling news flow from June, and the metallurgical test work needed to confirm a simple concentrate pathway with meaningful PGE credits. If you follow ASX mining, critical minerals, platinum group metals, copper, nickel, and WA exploration, this conversation maps the milestones that could drive a re-rate.

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