Here is a fascinating essay on coal, and why it is actually the choice for maximum greenhouse gas reduction. If it is correct, coal potentially has a strong future, so it could be a good investment strategy perhaps? http://papundits.wordpress.com/2011/07/19/co2-emissions-reduction-a-radical-plan/
baraka petroleum is one to watch, from the point of view of gas it has a project with a significant Canadian player, petrofrontier, about to put the first straw in the dirt the Georgina Basin is largely unexplored. I listened to Dan Denning's spiel when it came out and I couldn't help but wonder if he was hinting at BKP. I think he even mentioned Georgina. The other is the hapless Central Petroleum. I bailed a while ago - due to their publicity stunts and spectacularly bad performance. However, they hold permits over vast slabs of the Red Centre and the whole of the amadeus basin.