Copper Wire Types

How Is Copper Made?
http://oople.com/forums/member.php?u=522641
 
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http://adaptation-sterea.envirometrics.gr/index.php?topic=73714.0
 
 
Why installing 100-percent copper wires is important?
http://game-forum.nl/showthread.php?tid=7&pid=54391#pid54391
 
Geology and Genesis of Major Copper Deposits and Districts of the World
http://jkm666.com/forum.php?mod=viewthread&tid=2961455&page=1&authorid=147675
 
Casting Copper Cathodes
http://game.776.tw/viewthread.php?tid=1139882&extra=
 
Why is copper so important?
http://forum.quillmane.com/viewtopic.php?p=1490#p1490