Given how well the Street reacted to Penn Virginia Resource Partners' (NYSE:PVR) announcement that it was acquiring Chief Gathering in a transformative $1 billion deal, the time between now and closing will probably seem to drag a bit. After all, few investors are keen on thermal coal at all right now, and especially the Appalachian coal that makes up so much of PVR's asset base. Luckily for new investors, there still seems to be room for further appreciation, though it comes with added execution risk.