Chile Copper Production To Slow Over Operational Challenges, With Downside Risk To Mining Investment
http://arabfm.net/vb/member.php?u=629670

Casting Copper Cathodes
http://boogystyle.free.fr/Forum/viewtopic.php?p=56939#56939

Copper and Electricity
http://tsxvresearch.com/forum/viewtopic.php?f=2&t=13&p=290582#p290582

Copper Stocks and Flows
http://ypmelody.com/viewthread.php?tid=59100&page=1&authorid=107524

For Some Copper Deposits, Microbes Make Minable Minerals
http://xianyu.imotor.com/viewthread.php?tid=1519&extra=

What is copper's carbon footprint?
http://kudprathay.go.th/forum/suggestion-box/1656908-s-li-s-i-15-g-di-v-rubljah