On Wed, 20 Oct 2010 20:23:39 -0700, you wrote: >Someone, quick, start a rare earth mineral mining company! And the richest seams to mine? Landfills. On a similar note-- http://www.asimovs.com/_issue_0806/ref.shtml http://www.science20.com/news_releases/next_on_the_endangered_list_helium