Analysis by two Wits University academics using publicly available satellite images indicates the Jagersfontein mine tailings dam deviated from best engineering practice — and shows how much surveillance and research can be conducted with open data. 

In the study published in the journal Scientific Reports on Wednesday, Dr Luis Alberto Torres-Cruz, a senior lecturer at the Wits school of civil and environmental engineering, and master's student Christopher O'Donovan analysed the likely cause of the dam’s collapse...

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