Big Copper needs a big belt
A 5,000 foot long copper ore conveyor belt replacement at Twin Buttes mine south of Tucson embodies Arizona’s vast mining scale. The project, part of Copper Days 1973, shows a 65 pound per foot belt fed by a 10 engine system moving 9,000 tons per hour. The new belt will link worn sections through a dust free splice process as crews replace two belts over nine days, enabling annual output of hundreds of millions of tons of ore and waste rock.