Gold rush-era discards could fuel cellphones, TVs

SACRAMENTO, Calif. (AP) — Early miners digging for gold, silver and copper across the West had no idea that one day something else valuable would be hidden in the discarded piles of dirt and rocks called tailings.



via Tech News Headlines - Yahoo! News http://news.yahoo.com/gold-rush-era-discards-could-fuel-cellphones-tvs-133752521.html