Bus drivers wait beside their buses on a highway to pick up evacuees outside Kolontar, Hungary, Saturday, Oct. 9, 2010. The Hungarian town of Kolontar near the toxic red sludge reservoir that flooded the area and killed at least seven people is under evacuation over fears of a new leak of the dangerous heavy metal waste, officials said. (AP Photo/Bela Szandelszky)
An aerial view of the red mud covering streets and neighborhood of Kolontar, 167 kms southwest of Budapest, Hungary, taken on Tuesday, Oct. 5, 2010, after the rupture of a red sludge reservoir at an alumina plant, in nearby Ajka, with over one million cubic meters of the poisonous chemical sludge inundating several villages. The flood of toxic mud killed killed a yet unknown number of people, injured more than one hundred, with some people still missing. (AP Photo/MTI, Gyoergy Varga)
On Monday, a gigantic sludge reservoir burst its banks at an alumina plant in Ajka, Hungary caused a bad red sludge flood.
An aerial photo taken Tuesday, Oct. 5, 2010 shows the ruptured wall of a red sludge reservoir of the Ajkai Timfoldgyar plant in Kolontar, 100 miles (160 kilometers) southwest of Budapest, Hungary. The government declared a state of emergency in three counties affected by the flooding. (AP Photos/MTI, Gyoergy Varga)
Ajka is a town 100 miles (160 kilometers) southwest of Budapest, the capital of Hungary.
By Tuesday, it was reported that about 35.3 million cubic feet of sludge had poured from the reservoir, flooding a 16 square mile area.
An aerial view shows overturned cars in the red sludge yard of a house in Kolontar, 167 kms southwest of Budapest, Hungary, taken on Tuesday, Oct. 5, 2010. (AP Photo/MTI, Gyoergy Varga)
The red sludge is dangerous because the material is a waste product in aluminum production that contains heavy metals and is toxic if ingested.
At least four people were killed, six were missing and 120 injured, many with burns.
Hundreds were evacuated.
In Kolontar, the town closest to the plant, a 12-foot-high wave of red slurry hit, swept away everything in its path.
A villager checks his yard flooded by toxic mud in the Kolontar, Hungary, Tuesday, Oct. 5, 2010. (AP Photo/Bela Szandelszky)
Houses were flooded, cars were swept off and bridges were damaged.
It will be an ecological disaster if it reach the Danube River.
Emergency workers wearing masks and chemical protection gear rushed to pour 1,000 tons of plaster into the Marcal River to bind the sludge and keep it from flowing on to the Danube some 45 miles away.
I think we should stop making aluminium because this disaster can happen again and again.
Logs carried in by the flooding toxic mud cover a yard in the town of Devecser, Hungary, Tuesday, Oct. 5, 2010. Monday's flooding was caused by the rupture of a red sludge reservoir at an alumina plant in western Hungary and has affected seven towns near the Ajkai Timfoldgyar plant in the town of Ajka, 100 miles (160 kilometers) southwest of Budapest. (AP Photo/Bela Szandelszky)
A grain field is flooded by toxic mud outside the village of Kolontar, Hungary, Tuesday, Oct. 5, 2010. (AP Photo/Bela Szandelszky)
A rescue worker clearing the flooded village of Devecser, Hungary, October 5, 2010. REUTERS/Bernadett Szabo.
A resident stands in his flooded garden in the village of Kolontar 150km (93.2 miles) west of Budapest October 4, 2010.(REUTERS/Bernadett Szabo)
Local residents are rescued by excavators in Devecser, 164 kms southwest of Budapest, Hungary, Monday, Oct. 4, 2010. Three people are missing. (AP Photo/MTI, Lajos Nagy)