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One obscure material is quietly doing heavy lifting across the modern economy: high purity alumina (HPA). From LED lighting to semiconductor manufacturing to the thermal management challenges inside fast-growing data centres, HPA shows up where heat and chemical stability can’t be left to chance. We sit down with Dr Mike Jones, Managing Director of Impact Minerals, to break down what HPA actually is, why it often becomes artificial sapphire, and why demand growth is catching investors’ attention.

We then move from the big picture to the execution plan at the Lake Hope HPA project in Western Australia. Mike explains the practical mining concept on a salt lake, the logistics of moving clay feedstock to Perth, and how the Alluminous processing technology changes the commercial timeline. With a pilot plant progressing from batch toward continuous operation, plus a specialised analytical lab to control impurities, the focus turns to throughput, product consistency, and what it takes to qualify HPA for battery and technology customers, including early test work with a US battery technology company.

There’s more optionality on the table too. We unpack a separate flowsheet that targets sulfate of potash (SOP) fertiliser and hydrochloric acid from lake clays around Salmon Gums, and why location matters for both agricultural demand and WA goldfields consumption. Finally, we hit the exploration leverage: high-grade gold and silver results at the Commonwealth VMS project with Kuniko’s drilling ramping up, plus Impact’s large Broken Hill ground position and a compelling magnetotelluric conductor target lined up for future drilling.

If you want clear, investor-focused context on Impact Minerals, Lake Hope, HPA processing, SOP fertiliser, Commonwealth drilling, and Broken Hill targeting, hit play, subscribe, share the episode with a mate, and leave a review so more people can find the show.