Investor Presentation | Diggers & Dealers Mining Forum 2017

Hydrogeology supports sustainable long-term extraction... agrimin ➤ Hydrogeological model supports brine flow of 66.5GL (gigalitres) per year over 20 years from 5.5m deep trenches across a 250km network Lake Mackay is the end point of an enormous groundwater catchment area of approx. 87,000km² Potassium and sulphate is contained within the brine (saline groundwater) Hydrogeological Model of Lake Mackay Lake Mackay Catchment Area Investor Presentation | Diggers & Dealers Mining Forum 2017 Gypsum Sand Clayey Sand Clay Basement Solar evaporation Alice Springs Groundwater catchment area Groundwater recharge Lake Mackay 25

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