Photo detail

The tailings treatment, called evapotranspiration, prevents rainwater from leaching though the tailings, but allows it to evaporate into the air.
Photo courtesy of Doug Von Gausig

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Eyesore for the Verde Valley

It took 50 years to bury Clarkdale tailings

Most locals remember the bright orange mine tailings that layered the plain below Tuzigoot National Monument. The tailings have always been a surprising eyesore for visitors to the prehistoric Sinagua ruin, but in the mid-1950s they created political stir and gave Phelps Dodge a black eye.