I've said it on here before but you'll all notice the current 2C...

I've said it on here before but you'll all notice the current 2C number is based upon only approx 180 Mt of Coal given the risk weightings that have been applied to the resource - although i have no idea if those risk weightings will be somewhat reduced once certifier is given gasifier chamber dimensions - i.e. a true indication of gas recovered per ton of coal - rather than some (arguably) arbitrary risk weightings 

377 Mt * 0.6 * 0.8 = 181 Mt, granted not all of it may be possible to gasify