The 6.8 million metric tons of sludge and sand which were dredged from the river were sold to construction companies for a total of around US $ 250 million, nearly half of the cost of the project.
漢江共挖出六百八十萬噸泥沙，「換」成一千九百六十二億韓元，幾乎支付了一半的整治費。在附帶的經濟效益方面，漢江也似乎略勝愛河一籌。民主的代價