Clean Coal?

Shortly before the end of the year the Tenesse Valley Athority had a little accident. The picture above is from the TVA (Via Bay & Environment Blog). This house was deluged when a retention pond for coal ash burst, spilling an estimated 1 billion gallons of sludge, a years’ worth of waste from the Tennessee Valley Authority’s adjacent coal-burning power plant, over an area of 300 acres. Coal ash contains fun stuff like, arsenic, cadmium and mercury. This is stuff we don't want in the air (hence the sludge pool) but it is less regulated that house hold trash. I have been surprised by how little coverage this has gotten since it the biggest toxic spill our country has so far experienced. Clean coal anyone?