This April 11, 2013, file photo, shows the Kennecott Utah Copper Bingham Canyon Mine after a landslide in Bingham Canyon, Utah. The avalanche near Salt Lake City last year that carried enough rock, dirt and debris to bury New York's Central Park under 66 feet of rubble was North America's largest such disaster in modern history, according to University of Utah scientists. The April 2013 rockslide sent 165 million tons of debris into a nearly mile-deep pit where it cracked bedrock and triggered unprecedented earthquakes, the researchers said in a newly published study. (AP Photo/The Deseret News, Ravell Call, File) SALT LAKE TRIBUNE OUT; MAGS OUT
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