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Rio Tinto says dry conditions caused visible dust in Copperton; company to install automated sprinklers
Summary
Rio Tinto officials told the Copperton Town Council that visible dust on Aug. 9 and 11 originated from a soft-rock fall at the concentrator; the company said it will shut the concentrator next month to install automated sprinkler systems and share air-monitoring data with the town.
Rio Tinto representatives told the Copperton Town Council they believe two visible dust events that affected the town on Aug. 9 and Aug. 11 were caused by very dry conditions and a ‘‘fall from height’’ of soft rock at the company’s concentrator facility.
Ryan, identified by the council as Rio Tinto’s social performance manager, said the concentrator’s water and dust-control systems were operating during the incidents but that a long fall of soft material produced most of the dust. ‘‘We are shutting down the concentrator next month, and we'll be putting in some automated…
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