February 12, 2008
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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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.