Averaging 100 tonnes each, running day and night
I invite all to peruse the World Coal Institute's web page, in particular Coal Facts 2007. It's interesting information - 8.8% worldwide increase in hard coal production from 2005 to 2006 [to 5370 Mt]. I wonder where humanity will end up for 2007.
Finally, have a look at this map. Is it any reason Australia is painted black? Look at how exports are predicted to change over the next quarter century.
How much energy is involved just to move that material around the globe?
One uranium fuel pellet, contains the equivalent energy to a 100 tonne rail car full of coal (considerably more if reprocessed)