Why are copper metal wires used to conduct electricity? http://htforum.hu/member.php?action=profile&uid=251 Rising production from copper mine http://www.schalke04.cz/forum/viewthread.php?thread_id=115168 What causes copper's emissions? http://t23do.free.fr/viewtopic.php?f=4&t=36594 Are there any drawbacks to using bare copper conductors in your home or business wiring system? http://ww.i-freego.com/viewthread.php?tid=2407561&page=1&authorid=3480069 ?; text more then 1100 letters http://ww.i-freego.com/viewthread.php?tid=2407561&extra= Copper Stocks and Flows http://adtgamer.com.br/showthread.php?p=228383#post228383