ADEQ set to take action on major mining projects in Arizona
As mining operations ramp up across Arizona, two massive projects facing opposition from environmental groups and Native American tribes have public comment deadlines in the coming weeks. The Arizona Department of Environmental Quality is accepting comments on the proposed Resolution Copper project near Superior through April 7 and for the Copper World project in the Santa Rita Mountains, about 30 miles south of Tucson, through April 10. … Oak Flat sits over one of the largest remaining copper deposits in the world. The mine would sink more than 7,000 feet into the ground, where temperatures reach 180 degrees Fahrenheit. It would require large quantities of water for cooling, dust control to remediation of mine waste.