Arizona smelters spending millions to reduce air pollution

Molten copper pours from a cauldron into a series of furnaces and spillways that shape and cool the scorching metal into 800-pound slabs inside Asarco’s Hayden smelter 90 miles east of Phoenix. A crane hooks the 2-inch-thick slabs of copper, called anodes, and loads them onto waiting flatbed trucks. Since 1912, the industrial facility next to the Ray Mine has converted the hard rock from deep beneath the desert mountains into the red metal shipped around the world.

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Source: AZ Central

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