I work at ShaleApps http://shaleapps.com/ a Oil and Gas focused start up in West Virginia. Investment in the industry is plummeting because of low oil prices. The price of oil is around $60 a barrel right now, but the oil sands in North Dakota and Canada are only profitable at >$100. Coal is getting killed in the US for regulator reasons, but I don't see why other countries would make the massive investment to switch to natural gas. I think coal will like be seen as the "bridge fuel" by later generations.