Chesapeake Energy Corp,the Oklahoma-based firm is the No. 1 driller in Ohio.
Rig Count Interactive Map by Baker Hughes, an energy services company.
Shale Sheet Fracking, a Youngstown Vindicator blog.
The Ohio Environmental Council, a statewide eco-group based in Columbus.
Earthjustice, a national eco-group.
People's Oil and Gas Collaborative-Ohio, a grass-roots group in Northeast Ohio.
Concerned Citizens of Medina County, a grass-roots group.
No Frack Ohio, a Columbus-based grass-roots group.
Fracking: Gas Drilling's Environmental Threat by ProPublica, an online journalism site.
Pipeline, blog from Pittsburgh Post-Gazette on Marcellus shale drilling.
Allegheny Front, environmental public radio for Western Pennsylvania.
A Wheeling newspaper looked at production figures from 24 natural gas wells in West Virginia's Panhandle and found that production varies greatly from county to county.
The survey by the Sunday News-Register looked at 2011 data from wells in Marshall, Wetzel and Tyler counties.
Wells in Ohio, Brooke and Hancock counties were excluded because needed pipelines are still not complete to begin full production.
The story provides a interesting look at how much money wells can produce for drillers.
You can read the story by Casey Junkins by clicking here.