BigBarney wrote:Why would they care about our coal reserves when they have the worlds
The US has the largest supply, by far.... China controls about 13% of the world's reserves, Russia 17% and the US 27%. While they have large reserves they also burn an enormous amount. For some perspective about 4 or 5 times what the US does and it's about equal to what the entire world consumes. At the rate they are going now they could exhaust domestic supplies in about 3 or 4 decades.
That is "proven recoverable reserves", they know it's there and know it can be mined economically using modern mining methods. The total reserve may actually be an astounding amount. The very tip of this pyramid marked active mines could supply the US for the next 20 years. The part marked recoverable reserves would be the 27% of world reserves, the 478 billion tons they know is there but it may not be recoverable e.g. it's under a town. The last sections are based on some measurements and speculation.