I've found one answer to my question:
As the summary says, providing developed world living standards worldwide means we're at peak copper and - incidentally - zinc. Hmmm
See
http://www.pnas.org/cgi/reprint/103/5/1209?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=Metal+Stocks+and+Sustainability&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT
I've found one answer to my question:As the summary says,...
Add COPPER (LME) to my watchlist
 (20min delay)
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