GEOMECHANICS / GROUND CONTROL

Vale to decommission upstream tailings dams

In the wake of its latest tailings dam disaster, Brazilian iron mining giant Vale has announced that it will decommission all its tailings dams built using the upstream method

This is the second tailings dam failure at a Vale site in the state of Minas Gerais in recent years

This is the second tailings dam failure at a Vale site in the state of Minas Gerais in recent years

Vale estimated that it will take about three years to decommission its upstream dams and cost about 5 billion Brazilian real (US$1.4 billion). The move is expected to take about 40Mt/y of iron ore out...

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