I just started looking at these slowly a couple of weeks ago.I found it interesting that the Forbes & Manhatten group has a coal play FMC.Have done well with their plays in the past like crk,aaa,rm,adv and right now avr so it has definitely perked my interest.Also started looking it pcy and rda but haven't done enough research to say anything of value.From what I've been able to figure out though so far,coking coal is the one to be in for some big moves.Thats my take for what its worth.