Not to forget the abandoned mines in Belgium from the Messines campaign. Up to 20 tons of unexploded explosive per mine happily rotting under Belgium farms since 1917.
And all the bombs still found in Germany. And the mines in the Baltic. And in former Yugoslavia. And all the mines from the various wars in Africa. And the depleted uranium ammo from the Gulf War. And the stuff, mines and agent orange for example, left in East Asia.
And all the bombs still found in Germany. And the mines in the Baltic. And in former Yugoslavia. And all the mines from the various wars in Africa. And the depleted uranium ammo from the Gulf War. And the stuff, mines and agent orange for example, left in East Asia.
Quite a long list of stuff to clean up.