5 Para. 9 Eastern Europe The nations of Eastern Europe, including Poland, Hungary, and the Czech and Slovak Republics, are considered the most polluted of all the world's industrialized countries Heavy metals from coal mining have contaminated much of the area's waters Rivers, land and forests are so contaminated that many are now biologically deadPara. 9 Eastern Europe The nations of Eastern Europe, including Poland, Hungary, and the Czech and Slovak Republics, are considered the most polluted of all the world’s industrialized countries. Heavy metals from coal mining have contaminated much of the area’s waters. Rivers, land, and forests are so contaminated that many are now biologically dead