EXPLORATION & DEVELOPMENT

Rio trials new tunnel-boring system

RIO Tinto launched trial operations for its tunnel-boring system at the Northparkes copper-gold mine in the central west of New South Wales on Friday.

Hannah Vickers
Rio trials new tunnel-boring system

The 64m machine can excavate 10-12m a day on a typical deep copper ore body, twice the rate currently achieved with conventional tunnelling methods. Rio head of innovation John McGagh said the capability...

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