http://www.allacademic.com/meta/p_mla_apa_research_citation/1/0/9/1/8/p109181_index.html ] The tailing dam at the gold processing plant broke and 100000 meters cube 70 tons of toxic cyanide and heavy metal-laced waste water escaped into the River Tisza and into Hungary, making its way into the Danube and affecting Romania, Hungary, Ukraine, Serbia, and Bulgaria.