Peak coal to follow peak oil?
mongabay.com
December, 19, 2008
Is peak coal coming sooner than we think?
Governments have greatly overestimated global coal reserves according to estimates presented by a geologist at the annual meeting of the American Geophysical Union in San Francisco.
David Rutledge, a professor of engineering at Caltech, estimates economically recoverable coal reserves at 400 billion tons worldwide. By comparison, governments claim 850 billion to 998 billion tons of recoverable coal.