Main Dust

Two trucks spray down the Sierrita Mine over Green Valley on Jan. 9 as dust blows particles into the air. 

Six months after Freeport-McMoran reached a settlement with Pima County over several mine dust violations, the county has again accused the mine company of violating its air quality operating permit.

The Pima County Department of Environmental Quality sent Freeport general manager David Rhoades a Notice of Violation on Friday.

Kim Smith | 520-547-9740

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