I suspect in the future, perhaps very far into the future, we will mine long abandoned trash dumps for the resources buried there.
We could do that now! The conversion process isn't rocket science. But a lot of those former dumps now have houses on them............
>> I suspect in the future, perhaps very far into the future, we will mine long abandoned trash dumps for the resources buried there.
There's folks working on it: http://www.technologyreview.com/Energy/18328/
Here's a firm in CT that's among the leaders in it:
http://www.startech.net/