The Crucible - Southern African Institute of Mining and Metallurgy (SAIMM), 16 Jan Pyrometallurgy | Dr. Johan Zietsman - New Technologies in Pyrometallurgical Engineering. Zelmia Botha is joined in the SAIMM The Crucible studio by Dr Johan Zietsman. Dr Zietsman has worked with a wide range of metals, holds a PhD in Pyrometallurgy, and is the CEO of Ex Mente.
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