Islandes Eyjafjallajokull volcano3

The sun sets in a sky dusted with ash, over Lake Geneva, as seen from the Lavaux Vineyard Terraces, a UNESCO site in Switzerland, on April 17, 2010. (FABRICE COFFRINI/AFP/Getty Images) #

The volcano in southern Iceland's Eyjafjallajokull glacier sends ash into the air Saturday, April 17, 2010. (AP Photo/Brynjar Gauti) #

Farmers team up to rescue cattle from exposure to the toxic volcanic ash at a farm in Nupur, Iceland, as the volcano in southern Iceland's Eyjafjallajokull glacier sends ash into the air Saturday, April 17, 2010. (AP Photo/Brynjar Gauti) #

A rescue team helps landowners to clear volcanic ash from a roof in Seljavellir, Iceland on April 18, 2010. (HALLDOR KOLBEINS/AFP/Getty Images) #

Sheep farmer Thorkell Eiriksson (R) and his brother-in-law Petur Runottsson work to seal a sheep barn, in case winds shift and ash from a volcano erupting across the valley lands on their farm, in Eyjafjallajokull April 17, 2010. The current season is when the spring lambs are born and such young animals are especially susceptible to volcanic ash in their lungs so they must be stored inside. (REUTERS/Lucas Jackson) #

A dark ash cloud looms over the Icelandic south coast April 17, 2010. (REUTERS/Ingolfur Juliusson) #

Lightning, smoke and lava above Iceland's Eyjafjallajokul volcano on April 17, 2010. (REUTERS/Lucas Jackson) #

View seen from a road leading to the Eyjafjallajokull volcano as it continues to billow smoke and ash during an eruption on April 17, 2010. (HALLDOR KOLBEINS/AFP/Getty Images) #