The Broken Hill Proprietary Company, BHP, comes from Broken Hill, Australia. It is one of the largest mining companies in the world. Now what is interesting about Broken Hill is I have it on reasonable authority that the area as a whole has had "20 years of remaining reserves" for the last 60 years, because the explorers only bother to go out and 'discover' new parts of the deposit when they get below 15-20 years of…
> High prices isn't a signal that we have run out, it is a signal that more mines are needed. It is likely the market will heed the signal. It is a signal that there is a high demand, and not enough supply (whether naturally or artificially -- e.g. diamonds) to meet that demand. That's it. Building more mines can only happen if the resources exist to mine. This idea that "the market" is a magic wand to wave at proble…
In a very real sense, we don't know how many undiscovered resources are out there, we can only estimate them. And the estimates move over time with technological improvement.