Study shows the most efficient mines in top producer Chile now produce copper for less than $1 a pound after finding an additional 13% in savings this year.
"The global economy seems stuck in a subdued low-productivity growth pattern," says world's number two miner after reporting lowest earnings in 12 years.
The concept has been around for some time in various fields, including new technology, entertainment and media, and has been relatively successful. As a result, some mining companies have decided to utilise it.
