Copper’s biggest mystery is finally cracking

https://www.bloomberg.com/news/articles/2022-11-27/this-startup-may-have-the-key-to-unlock-millions-of-tons-of-copper

"common type of ore that traps copper behind thin film, making it too costly and difficult to extract... specialized catalyst disrupt layer... rock-eating microbes releasing copper... needs to be proven large scale... BHP Group trial plant at Escondida in Chile... Freeport-McMoRan Inc. began implementing Jetti’s technology at an Arizona mine this year, while rival Rio Tinto Group offering its competing but similar Nuton technologyis"