Caustic Sludge Burns Through Hungarian Towns En Route to the Danube

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On Feb. 26, 1972, a rain-drenched impoundment dam in Logan County, W.Va., belonging to the Pittston Coal Company, unleashed a 10- to 20-foot-high wave of blackened water onto the communities of Buffalo Creek Hollow. The 132 million gallons washed out two other impoundment dams in the disaster that claimed 118 lives, left seven missing and injured 1,000 more. It destroyed more than 500 homes and left 4,000 people homeless, according to the official report to West Virginia Gov. Arch A. Moore Jr.

Robert Gardner, a campaigner for Greenpeace, said in an interview Thursday that 137 coal ash sites in 34 states have been identified by three nonprofit environmental groups: Environmental Integrity Project, the Sierra Club and Earthjustice, as releasing toxic metals and other contaminants into ground water or surface water. These sites, in rural and urban areas alike, often feature tall coal-ash piles surrounded by protective berms, or coal ash ponds, which could give out.

Gardner cited the ash treatment dam at the Cane Run generating facility in Louisville, Ky., very close to a street of working-class homes in that southern city. The federal Environmental Protection Agency considers the 79-acre Cane Run pond a "high-hazard" site, where a dam breach would cost lives. He said that the dam owner has proposed a 16-story ash impoundment expansion for 5.7 million cubic yards of coal waste.

Preventing a Toxic Sludge Catastrophe

The EPA in late August held the first in a series of regional hearings about a pending rule to regulate the handling of coal ash waste from power plants; the next is scheduled for Oct. 27 in Knoxville, Tenn.

But coal isn't the only mining industry whose waste products pose potential hazards.

Outside Salt Lake City, the Bingham Canyon mine operated by Kennecott Utah Copper is America's biggest open pit mine, as well as the largest man-made excavation on earth, so large that it's visible from space. The mine, which contains copper, molybdenum, and precious metals, is 2.5 miles across, rimmed by huge piles of waste, situated in a seismically active area.

Much of the waste has been moved into a nearby mine tailings pond, which is 220 feet high, covers about 14 square miles and holds 2 billion tons of mine tailings -- the leftovers from extracting valuable metals from ore.

If the area suffered a catastrophic earthquake of at least magnitude 7.25, which is possible near the Wasatch Fault, there could be danger for the people of Magna, and there certainly could have been in the 1980s, according to a series of investigative stories in the Salt Lake Tribune. The newspaper reported in 2008 on a Kennecott coverup of the hazards of an older waste lagoon in the 1980s, alleging that the company and the state engineer's office at that time withheld information from the public about the instability of the mine sludge should a large earthquake occur. The stories also detailed the company's secret purchase of homes that would be in the path of the sludge.

After the stories ran, Kennecott Utah Copper contacted local residents to tell them the company, which was under new leadership, had taken steps in the 1990s to safeguard the area, including moving the sludge to a new area and erecting a protective berm to shield a nearby neighborhood from a slide.

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