http://heroicfantasygames.free.fr/Forum/viewtopic.php?p=211957#211957 - how much does copper cost now per kg

What is Copper used for?
http://lbbs.chuansuoji.com.cn/forum.php?mod=viewthread&tid=6648&extra=

[url=http://game-forum.nl/showthread.php?tid=3164&pid=27041#pid27041]Does Copper Conduct Electricity?[/url]

What are the uses of copper wire and its types?
http://arabfm.net/vb/showthread.php?p=3958249#post3958249

приемка меди в Санкт-Петербурге

Fueling the future with copper
http://new.lemacaron.nyc/index.php/forum/more-about-the-kunena/272990-copper-oxide-deposits#272971