Copper
for clean energy.
A 3 MW wind turbine contains 9,400 lbs of copper.
3833136_8_polyme_nw.indd MAY 2014 1NORTHERN WILDS
PolyMet
33136_8_polyme_nw
4/16/2014
4/18/14 2:55 PM
Northernwilds may14
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