D Problem of environmental mercury pollution in the world

There are several possible sources of mercury pollution. Pollution caused by factory drain or organo-mercurial pesticide has been decreasing though it still continues to occur mainly in developing countries.
On the contrary, mercury pollution caused by small-scale gold mining activities or mercury from closed mines, as well as mercury-polluted soil in the sites of demolished chemical factories has become serious recently.

It is urgent necessity to take measures for mercury pollution and to study its health effect in pollution-ridden areas.
The National Institute for Minamata Disease has positively engaged with such activity.