(**Okay, let's try this again. If it doesn't work this time then my apologies.)
Time to bump this thread..again LOL.
Also, have a read of these posts as a bit of a refresher...
Clarifications One by Mihal
Clarifications Two by Mihal (read the small bit about Penumbra)
Thermal Coal Commentary by Mihal
"Smary Money" by Funky
Botswana Comparisons
Keep your Eyes on the Bigger Picture