The History of Mining Cobalt

The mineral exploration business is an incredibly old industry. It's essentially driven and been driven by by the evolution civilization, right? And started pretty much with copper. We need to find new sources of cobalt. So how do you do that? The metal that we need is changing, and now we need cobalt. How is the way we mine the way we source it changing too? Let's go back and start earlier. What does the history of mine ing cobalt look like?