Australian mining group BHP has invested in a start-up that says it can reduce the amount of energy needed to crush rock, part of growing efforts by the mining sector to curb energy use.
The Toulouse-based start-up, I-Rox, uses high-voltage pulses of power to disintegrate rock, an approach that has been trialled in laboratories for years but has not previously been applied in commercial mining operations.
Its backers include the Bill Gates-backed Breakthrough Energy Ventures, and the Canadian mining magnate Robert Friedland.
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